| 1 | module editor_state_module |
| 2 | use iso_fortran_env, only: int32, int64 |
| 3 | use text_buffer_module, only: buffer_t, copy_buffer, init_buffer |
| 4 | use lsp_server_manager_module, only: lsp_manager_t, init_lsp_manager, cleanup_lsp_manager, & |
| 5 | get_or_start_server, process_server_messages, & |
| 6 | start_lsp_for_file, start_all_lsp_servers_for_file, & |
| 7 | get_server_with_capability, notify_file_opened, & |
| 8 | notify_file_changed, notify_file_closed, & |
| 9 | request_completion, request_hover |
| 10 | use completion_popup_module, only: completion_popup_t, init_completion_popup, & |
| 11 | cleanup_completion_popup |
| 12 | use hover_tooltip_module, only: hover_tooltip_t, init_hover_tooltip, & |
| 13 | cleanup_hover_tooltip |
| 14 | use diagnostics_module, only: diagnostics_store_t, init_diagnostics_store, & |
| 15 | cleanup_diagnostics_store |
| 16 | use diagnostics_panel_module, only: diagnostics_panel_t, init_diagnostics_panel, & |
| 17 | cleanup_diagnostics_panel |
| 18 | use references_panel_module, only: references_panel_t, init_references_panel, & |
| 19 | cleanup_references_panel |
| 20 | use code_actions_panel_module, only: code_actions_panel_t, init_code_actions_panel, & |
| 21 | cleanup_code_actions_panel |
| 22 | use symbols_panel_module, only: symbols_panel_t, init_symbols_panel, & |
| 23 | cleanup_symbols_panel |
| 24 | use signature_tooltip_module, only: signature_tooltip_t, init_signature_tooltip, & |
| 25 | cleanup_signature_tooltip |
| 26 | use command_palette_module, only: command_palette_t, init_command_palette, & |
| 27 | cleanup_command_palette |
| 28 | use workspace_symbols_panel_module, only: workspace_symbols_panel_t, init_workspace_symbols_panel, & |
| 29 | cleanup_workspace_symbols_panel |
| 30 | use document_sync_module, only: document_sync_t, init_document_sync, & |
| 31 | cleanup_document_sync |
| 32 | use jump_stack_module, only: jump_stack_t, init_jump_stack, & |
| 33 | cleanup_jump_stack |
| 34 | use lsp_server_installer_panel_module, only: lsp_server_installer_panel_t, & |
| 35 | init_lsp_server_installer_panel, & |
| 36 | cleanup_lsp_server_installer_panel |
| 37 | implicit none |
| 38 | private |
| 39 | |
| 40 | public :: editor_state_t, cursor_t, pane_t, tab_t |
| 41 | public :: init_editor, cleanup_editor |
| 42 | public :: create_tab, switch_to_tab, switch_to_tab_with_buffer, get_active_tab_index, close_tab |
| 43 | public :: split_pane_vertical, split_pane_horizontal, close_pane, get_active_pane_indices |
| 44 | public :: navigate_to_pane_left, navigate_to_pane_right, navigate_to_pane_up, navigate_to_pane_down |
| 45 | public :: sync_pane_to_editor, sync_editor_to_pane, switch_to_pane, switch_to_pane_with_buffer |
| 46 | public :: sync_buffer_to_all_instances |
| 47 | |
| 48 | ! Cursor position and selection |
| 49 | ! Cursor type - positions are UTF-8 CHARACTER indices (not byte indices) |
| 50 | ! |
| 51 | ! IMPORTANT: All column values are 1-based CHARACTER positions, NOT byte positions |
| 52 | ! For example, in the string "├──", column=2 refers to the second character (─), |
| 53 | ! even though that character starts at byte 4. |
| 54 | type :: cursor_t |
| 55 | integer(int32) :: line = 1 ! Line number (1-based) |
| 56 | integer(int32) :: column = 1 ! UTF-8 character position (1-based), NOT byte index |
| 57 | integer(int32) :: desired_column = 1 ! For vertical movement (character position) |
| 58 | logical :: has_selection = .false. |
| 59 | integer(int32) :: selection_start_line = 1 |
| 60 | integer(int32) :: selection_start_col = 1 ! UTF-8 character position |
| 61 | end type cursor_t |
| 62 | |
| 63 | ! Pane - represents a view within a tab |
| 64 | type :: pane_t |
| 65 | ! Position within tab (0.0 to 1.0 normalized coordinates) |
| 66 | real :: x_start = 0.0 |
| 67 | real :: y_start = 0.0 |
| 68 | real :: x_end = 1.0 |
| 69 | real :: y_end = 1.0 |
| 70 | |
| 71 | ! Actual screen coordinates (calculated during render) |
| 72 | integer :: screen_col = 1 |
| 73 | integer :: screen_row = 1 |
| 74 | integer :: screen_width = 80 |
| 75 | integer :: screen_height = 24 |
| 76 | |
| 77 | ! Each pane has its own buffer and file |
| 78 | type(buffer_t) :: buffer |
| 79 | character(len=:), allocatable :: filename |
| 80 | |
| 81 | ! Independent view state |
| 82 | integer(int32) :: viewport_line = 1 |
| 83 | integer(int32) :: viewport_column = 1 |
| 84 | type(cursor_t), allocatable :: cursors(:) |
| 85 | integer(int32) :: active_cursor = 1 |
| 86 | |
| 87 | ! State |
| 88 | logical :: is_active = .false. |
| 89 | end type pane_t |
| 90 | |
| 91 | ! Tab - represents a single file buffer with one or more panes |
| 92 | type :: tab_t |
| 93 | character(len=:), allocatable :: filename |
| 94 | type(buffer_t) :: buffer |
| 95 | |
| 96 | ! Panes within this tab |
| 97 | type(pane_t), allocatable :: panes(:) |
| 98 | integer(int32) :: active_pane_index = 1 |
| 99 | |
| 100 | logical :: modified = .false. |
| 101 | logical :: is_orphan = .false. ! True if file is outside workspace (uses absolute path) |
| 102 | |
| 103 | ! LSP support - multiple servers per file |
| 104 | integer, allocatable :: lsp_server_indices(:) ! Indices of LSP servers handling this file |
| 105 | integer :: num_lsp_servers = 0 ! Number of active LSP servers |
| 106 | type(document_sync_t) :: document_sync ! Document synchronization for LSP |
| 107 | end type tab_t |
| 108 | |
| 109 | ! Main editor state |
| 110 | type :: editor_state_t |
| 111 | ! Legacy fields (kept for backward compatibility during transition) |
| 112 | type(cursor_t), allocatable :: cursors(:) |
| 113 | integer(int32) :: active_cursor = 1 |
| 114 | integer(int32) :: viewport_line = 1 |
| 115 | integer(int32) :: viewport_column = 1 |
| 116 | integer(int32) :: screen_rows = 24 |
| 117 | integer(int32) :: screen_cols = 80 |
| 118 | character(len=:), allocatable :: filename |
| 119 | character(len=:), allocatable :: workspace_path ! Current working directory |
| 120 | logical :: modified = .false. |
| 121 | logical :: fuss_mode_active = .false. ! Toggle for file tree mode |
| 122 | logical :: fuss_hints_expanded = .false. ! Toggle for expanded fuss legend |
| 123 | |
| 124 | ! Tab management |
| 125 | type(tab_t), allocatable :: tabs(:) |
| 126 | integer(int32) :: active_tab_index = 1 |
| 127 | integer(int32) :: max_tabs = 10 |
| 128 | |
| 129 | ! LSP support |
| 130 | type(lsp_manager_t) :: lsp_manager |
| 131 | type(completion_popup_t) :: completion_popup |
| 132 | type(hover_tooltip_t) :: hover_tooltip |
| 133 | type(diagnostics_store_t) :: diagnostics |
| 134 | type(diagnostics_panel_t) :: diagnostics_panel |
| 135 | type(references_panel_t) :: references_panel |
| 136 | type(code_actions_panel_t) :: code_actions_panel |
| 137 | type(symbols_panel_t) :: symbols_panel |
| 138 | type(signature_tooltip_t) :: signature_tooltip |
| 139 | type(command_palette_t) :: command_palette |
| 140 | type(workspace_symbols_panel_t) :: workspace_symbols_panel |
| 141 | type(lsp_server_installer_panel_t) :: lsp_installer_panel |
| 142 | |
| 143 | ! Navigation |
| 144 | type(jump_stack_t) :: jump_stack |
| 145 | end type editor_state_t |
| 146 | |
| 147 | contains |
| 148 | |
| 149 | subroutine init_editor(editor) |
| 150 | type(editor_state_t), intent(out) :: editor |
| 151 | |
| 152 | ! Initialize with single cursor |
| 153 | allocate(editor%cursors(1)) |
| 154 | editor%cursors(1)%line = 1 |
| 155 | editor%cursors(1)%column = 1 |
| 156 | editor%cursors(1)%desired_column = 1 |
| 157 | editor%active_cursor = 1 |
| 158 | |
| 159 | ! Default screen size (will be updated by terminal query) |
| 160 | editor%screen_rows = 24 |
| 161 | editor%screen_cols = 80 |
| 162 | editor%viewport_line = 1 |
| 163 | editor%viewport_column = 1 |
| 164 | |
| 165 | editor%modified = .false. |
| 166 | |
| 167 | ! Initialize tabs array (empty initially) |
| 168 | allocate(editor%tabs(0)) |
| 169 | editor%active_tab_index = 0 |
| 170 | |
| 171 | ! Initialize LSP manager |
| 172 | call init_lsp_manager(editor%lsp_manager) |
| 173 | |
| 174 | ! Initialize completion popup |
| 175 | call init_completion_popup(editor%completion_popup) |
| 176 | |
| 177 | ! Initialize hover tooltip |
| 178 | call init_hover_tooltip(editor%hover_tooltip) |
| 179 | |
| 180 | ! Initialize diagnostics store |
| 181 | call init_diagnostics_store(editor%diagnostics) |
| 182 | |
| 183 | ! Initialize diagnostics panel |
| 184 | call init_diagnostics_panel(editor%diagnostics_panel) |
| 185 | |
| 186 | ! Initialize references panel |
| 187 | call init_references_panel(editor%references_panel) |
| 188 | |
| 189 | ! Initialize code actions menu |
| 190 | call init_code_actions_panel(editor%code_actions_panel) |
| 191 | |
| 192 | ! Initialize symbols panel |
| 193 | call init_symbols_panel(editor%symbols_panel) |
| 194 | |
| 195 | ! Initialize signature tooltip |
| 196 | call init_signature_tooltip(editor%signature_tooltip) |
| 197 | |
| 198 | ! Initialize command palette |
| 199 | call init_command_palette(editor%command_palette) |
| 200 | |
| 201 | ! Initialize workspace symbols panel |
| 202 | call init_workspace_symbols_panel(editor%workspace_symbols_panel) |
| 203 | |
| 204 | ! Initialize jump stack |
| 205 | call init_jump_stack(editor%jump_stack) |
| 206 | |
| 207 | ! Initialize LSP server installer panel |
| 208 | call init_lsp_server_installer_panel(editor%lsp_installer_panel) |
| 209 | end subroutine init_editor |
| 210 | |
| 211 | subroutine cleanup_editor(editor) |
| 212 | type(editor_state_t), intent(inout) :: editor |
| 213 | integer :: i |
| 214 | |
| 215 | if (allocated(editor%cursors)) deallocate(editor%cursors) |
| 216 | if (allocated(editor%filename)) deallocate(editor%filename) |
| 217 | if (allocated(editor%workspace_path)) deallocate(editor%workspace_path) |
| 218 | |
| 219 | ! Cleanup tabs |
| 220 | if (allocated(editor%tabs)) then |
| 221 | do i = 1, size(editor%tabs) |
| 222 | call cleanup_tab(editor%tabs(i)) |
| 223 | end do |
| 224 | deallocate(editor%tabs) |
| 225 | end if |
| 226 | |
| 227 | ! Cleanup LSP manager |
| 228 | call cleanup_lsp_manager(editor%lsp_manager) |
| 229 | |
| 230 | ! Cleanup completion popup |
| 231 | call cleanup_completion_popup(editor%completion_popup) |
| 232 | |
| 233 | ! Cleanup hover tooltip |
| 234 | call cleanup_hover_tooltip(editor%hover_tooltip) |
| 235 | |
| 236 | ! Cleanup diagnostics store |
| 237 | call cleanup_diagnostics_store(editor%diagnostics) |
| 238 | |
| 239 | ! Cleanup diagnostics panel |
| 240 | call cleanup_diagnostics_panel(editor%diagnostics_panel) |
| 241 | |
| 242 | ! Cleanup references panel |
| 243 | call cleanup_references_panel(editor%references_panel) |
| 244 | |
| 245 | ! Cleanup code actions menu |
| 246 | call cleanup_code_actions_panel(editor%code_actions_panel) |
| 247 | |
| 248 | ! Cleanup symbols panel |
| 249 | call cleanup_symbols_panel(editor%symbols_panel) |
| 250 | |
| 251 | ! Cleanup signature tooltip |
| 252 | call cleanup_signature_tooltip(editor%signature_tooltip) |
| 253 | |
| 254 | ! Cleanup command palette |
| 255 | call cleanup_command_palette(editor%command_palette) |
| 256 | |
| 257 | ! Cleanup workspace symbols panel |
| 258 | call cleanup_workspace_symbols_panel(editor%workspace_symbols_panel) |
| 259 | |
| 260 | ! Cleanup jump stack |
| 261 | call cleanup_jump_stack(editor%jump_stack) |
| 262 | |
| 263 | ! Cleanup LSP server installer panel |
| 264 | call cleanup_lsp_server_installer_panel(editor%lsp_installer_panel) |
| 265 | end subroutine cleanup_editor |
| 266 | |
| 267 | ! Helper to cleanup a single tab |
| 268 | subroutine cleanup_tab(tab) |
| 269 | use text_buffer_module, only: cleanup_buffer |
| 270 | type(tab_t), intent(inout) :: tab |
| 271 | integer :: i |
| 272 | |
| 273 | if (allocated(tab%filename)) deallocate(tab%filename) |
| 274 | |
| 275 | ! Cleanup panes |
| 276 | if (allocated(tab%panes)) then |
| 277 | do i = 1, size(tab%panes) |
| 278 | if (allocated(tab%panes(i)%cursors)) deallocate(tab%panes(i)%cursors) |
| 279 | end do |
| 280 | deallocate(tab%panes) |
| 281 | end if |
| 282 | |
| 283 | call cleanup_buffer(tab%buffer) |
| 284 | |
| 285 | ! Cleanup LSP server indices |
| 286 | if (allocated(tab%lsp_server_indices)) deallocate(tab%lsp_server_indices) |
| 287 | tab%num_lsp_servers = 0 |
| 288 | |
| 289 | ! Cleanup document sync |
| 290 | call cleanup_document_sync(tab%document_sync) |
| 291 | end subroutine cleanup_tab |
| 292 | |
| 293 | ! Create a new tab with the given filename |
| 294 | subroutine create_tab(editor, filename) |
| 295 | use text_buffer_module, only: init_buffer |
| 296 | type(editor_state_t), intent(inout) :: editor |
| 297 | character(len=*), intent(in) :: filename |
| 298 | type(tab_t), allocatable :: temp_tabs(:) |
| 299 | integer :: n_tabs, new_index |
| 300 | |
| 301 | n_tabs = size(editor%tabs) |
| 302 | |
| 303 | ! Check max tabs limit |
| 304 | if (n_tabs >= editor%max_tabs) then |
| 305 | ! Could add error handling here |
| 306 | return |
| 307 | end if |
| 308 | |
| 309 | ! Resize tabs array |
| 310 | allocate(temp_tabs(n_tabs + 1)) |
| 311 | if (n_tabs > 0) then |
| 312 | temp_tabs(1:n_tabs) = editor%tabs(1:n_tabs) |
| 313 | end if |
| 314 | |
| 315 | ! Initialize new tab |
| 316 | new_index = n_tabs + 1 |
| 317 | allocate(character(len=len_trim(filename)) :: temp_tabs(new_index)%filename) |
| 318 | temp_tabs(new_index)%filename = trim(filename) |
| 319 | call init_buffer(temp_tabs(new_index)%buffer) |
| 320 | |
| 321 | ! Create default pane (full screen) |
| 322 | allocate(temp_tabs(new_index)%panes(1)) |
| 323 | temp_tabs(new_index)%panes(1)%x_start = 0.0 |
| 324 | temp_tabs(new_index)%panes(1)%y_start = 0.0 |
| 325 | temp_tabs(new_index)%panes(1)%x_end = 1.0 |
| 326 | temp_tabs(new_index)%panes(1)%y_end = 1.0 |
| 327 | temp_tabs(new_index)%panes(1)%viewport_line = 1 |
| 328 | temp_tabs(new_index)%panes(1)%viewport_column = 1 |
| 329 | temp_tabs(new_index)%panes(1)%is_active = .true. |
| 330 | |
| 331 | ! Initialize screen coordinates for the default pane |
| 332 | ! These will be updated during rendering, but set reasonable defaults |
| 333 | temp_tabs(new_index)%panes(1)%screen_col = 1 |
| 334 | temp_tabs(new_index)%panes(1)%screen_row = 2 ! After tab bar |
| 335 | temp_tabs(new_index)%panes(1)%screen_width = 80 ! Default width |
| 336 | temp_tabs(new_index)%panes(1)%screen_height = 22 ! Default height (24 - 2) |
| 337 | |
| 338 | ! Initialize cursor in the default pane |
| 339 | allocate(temp_tabs(new_index)%panes(1)%cursors(1)) |
| 340 | temp_tabs(new_index)%panes(1)%cursors(1)%line = 1 |
| 341 | temp_tabs(new_index)%panes(1)%cursors(1)%column = 1 |
| 342 | temp_tabs(new_index)%panes(1)%cursors(1)%desired_column = 1 |
| 343 | temp_tabs(new_index)%panes(1)%cursors(1)%has_selection = .false. |
| 344 | temp_tabs(new_index)%panes(1)%active_cursor = 1 |
| 345 | |
| 346 | ! Initialize pane's buffer and filename (copy from tab) |
| 347 | call init_buffer(temp_tabs(new_index)%panes(1)%buffer) |
| 348 | call copy_buffer(temp_tabs(new_index)%panes(1)%buffer, temp_tabs(new_index)%buffer) |
| 349 | allocate(character(len=len_trim(filename)) :: temp_tabs(new_index)%panes(1)%filename) |
| 350 | temp_tabs(new_index)%panes(1)%filename = trim(filename) |
| 351 | |
| 352 | temp_tabs(new_index)%active_pane_index = 1 |
| 353 | temp_tabs(new_index)%modified = .false. |
| 354 | |
| 355 | ! Start ALL LSP servers for this file (multi-server support) |
| 356 | call start_all_lsp_servers_for_file(editor%lsp_manager, filename, & |
| 357 | temp_tabs(new_index)%lsp_server_indices, & |
| 358 | temp_tabs(new_index)%num_lsp_servers) |
| 359 | |
| 360 | ! Initialize document sync for LSP if we have servers |
| 361 | if (temp_tabs(new_index)%num_lsp_servers > 0) then |
| 362 | block |
| 363 | character(len=:), allocatable :: file_uri |
| 364 | file_uri = 'file://' // trim(filename) |
| 365 | ! Use first server for document sync (primary server) |
| 366 | call init_document_sync(temp_tabs(new_index)%document_sync, & |
| 367 | file_uri, temp_tabs(new_index)%lsp_server_indices(1)) |
| 368 | end block |
| 369 | end if |
| 370 | |
| 371 | ! Replace tabs array |
| 372 | call move_alloc(temp_tabs, editor%tabs) |
| 373 | editor%active_tab_index = new_index |
| 374 | end subroutine create_tab |
| 375 | |
| 376 | ! Switch to a specific tab index (1-based) |
| 377 | subroutine switch_to_tab(editor, tab_index) |
| 378 | type(editor_state_t), intent(inout) :: editor |
| 379 | integer(int32), intent(in) :: tab_index |
| 380 | integer :: pane_idx |
| 381 | |
| 382 | if (tab_index < 1 .or. tab_index > size(editor%tabs)) return |
| 383 | |
| 384 | ! Save current tab state (if any) |
| 385 | if (editor%active_tab_index > 0 .and. editor%active_tab_index <= size(editor%tabs)) then |
| 386 | ! Save to active pane of current tab |
| 387 | pane_idx = editor%tabs(editor%active_tab_index)%active_pane_index |
| 388 | if (allocated(editor%tabs(editor%active_tab_index)%panes) .and. & |
| 389 | pane_idx > 0 .and. pane_idx <= size(editor%tabs(editor%active_tab_index)%panes)) then |
| 390 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%cursors = editor%cursors |
| 391 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%active_cursor = editor%active_cursor |
| 392 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%viewport_line = editor%viewport_line |
| 393 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%viewport_column = editor%viewport_column |
| 394 | end if |
| 395 | editor%tabs(editor%active_tab_index)%modified = editor%modified |
| 396 | end if |
| 397 | |
| 398 | ! Load new tab state |
| 399 | editor%active_tab_index = tab_index |
| 400 | |
| 401 | ! Load from active pane of new tab |
| 402 | pane_idx = editor%tabs(tab_index)%active_pane_index |
| 403 | if (allocated(editor%tabs(tab_index)%panes) .and. & |
| 404 | pane_idx > 0 .and. pane_idx <= size(editor%tabs(tab_index)%panes)) then |
| 405 | |
| 406 | if (allocated(editor%cursors)) deallocate(editor%cursors) |
| 407 | allocate(editor%cursors(size(editor%tabs(tab_index)%panes(pane_idx)%cursors))) |
| 408 | editor%cursors = editor%tabs(tab_index)%panes(pane_idx)%cursors |
| 409 | editor%active_cursor = editor%tabs(tab_index)%panes(pane_idx)%active_cursor |
| 410 | editor%viewport_line = editor%tabs(tab_index)%panes(pane_idx)%viewport_line |
| 411 | editor%viewport_column = editor%tabs(tab_index)%panes(pane_idx)%viewport_column |
| 412 | end if |
| 413 | |
| 414 | if (allocated(editor%filename)) deallocate(editor%filename) |
| 415 | allocate(character(len=len(editor%tabs(tab_index)%filename)) :: editor%filename) |
| 416 | editor%filename = editor%tabs(tab_index)%filename |
| 417 | editor%modified = editor%tabs(tab_index)%modified |
| 418 | end subroutine switch_to_tab |
| 419 | |
| 420 | ! Switch to a tab with buffer synchronization |
| 421 | subroutine switch_to_tab_with_buffer(editor, tab_index, buffer) |
| 422 | use text_buffer_module, only: copy_buffer |
| 423 | type(editor_state_t), intent(inout) :: editor |
| 424 | integer(int32), intent(in) :: tab_index |
| 425 | type(buffer_t), intent(inout) :: buffer |
| 426 | integer :: pane_idx |
| 427 | |
| 428 | if (tab_index < 1 .or. tab_index > size(editor%tabs)) return |
| 429 | |
| 430 | ! Save current buffer to current tab's active pane (if any) |
| 431 | if (editor%active_tab_index > 0 .and. editor%active_tab_index <= size(editor%tabs)) then |
| 432 | ! Save to active pane of current tab |
| 433 | pane_idx = editor%tabs(editor%active_tab_index)%active_pane_index |
| 434 | if (allocated(editor%tabs(editor%active_tab_index)%panes) .and. & |
| 435 | pane_idx > 0 .and. pane_idx <= size(editor%tabs(editor%active_tab_index)%panes)) then |
| 436 | ! Save buffer to pane's buffer |
| 437 | call copy_buffer(editor%tabs(editor%active_tab_index)%panes(pane_idx)%buffer, buffer) |
| 438 | |
| 439 | ! Sync buffer to all other instances of this file |
| 440 | if (allocated(editor%tabs(editor%active_tab_index)%panes(pane_idx)%filename)) then |
| 441 | call sync_buffer_to_all_instances(editor, & |
| 442 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%filename, buffer) |
| 443 | end if |
| 444 | |
| 445 | ! Save cursor and viewport state |
| 446 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%cursors = editor%cursors |
| 447 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%active_cursor = editor%active_cursor |
| 448 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%viewport_line = editor%viewport_line |
| 449 | editor%tabs(editor%active_tab_index)%panes(pane_idx)%viewport_column = editor%viewport_column |
| 450 | end if |
| 451 | ! Also save to tab's buffer for backwards compatibility |
| 452 | call copy_buffer(editor%tabs(editor%active_tab_index)%buffer, buffer) |
| 453 | editor%tabs(editor%active_tab_index)%modified = editor%modified |
| 454 | end if |
| 455 | |
| 456 | ! Switch to new tab |
| 457 | editor%active_tab_index = tab_index |
| 458 | |
| 459 | ! Load new tab's active pane buffer |
| 460 | pane_idx = editor%tabs(tab_index)%active_pane_index |
| 461 | if (allocated(editor%tabs(tab_index)%panes) .and. & |
| 462 | pane_idx > 0 .and. pane_idx <= size(editor%tabs(tab_index)%panes)) then |
| 463 | call copy_buffer(buffer, editor%tabs(tab_index)%panes(pane_idx)%buffer) |
| 464 | else |
| 465 | ! Fallback to tab buffer if no pane |
| 466 | call copy_buffer(buffer, editor%tabs(tab_index)%buffer) |
| 467 | end if |
| 468 | |
| 469 | ! Load from active pane of new tab |
| 470 | pane_idx = editor%tabs(tab_index)%active_pane_index |
| 471 | if (allocated(editor%tabs(tab_index)%panes) .and. & |
| 472 | pane_idx > 0 .and. pane_idx <= size(editor%tabs(tab_index)%panes)) then |
| 473 | |
| 474 | if (allocated(editor%cursors)) deallocate(editor%cursors) |
| 475 | allocate(editor%cursors(size(editor%tabs(tab_index)%panes(pane_idx)%cursors))) |
| 476 | editor%cursors = editor%tabs(tab_index)%panes(pane_idx)%cursors |
| 477 | editor%active_cursor = editor%tabs(tab_index)%panes(pane_idx)%active_cursor |
| 478 | editor%viewport_line = editor%tabs(tab_index)%panes(pane_idx)%viewport_line |
| 479 | editor%viewport_column = editor%tabs(tab_index)%panes(pane_idx)%viewport_column |
| 480 | end if |
| 481 | |
| 482 | if (allocated(editor%filename)) deallocate(editor%filename) |
| 483 | allocate(character(len=len(editor%tabs(tab_index)%filename)) :: editor%filename) |
| 484 | editor%filename = editor%tabs(tab_index)%filename |
| 485 | editor%modified = editor%tabs(tab_index)%modified |
| 486 | end subroutine switch_to_tab_with_buffer |
| 487 | |
| 488 | ! Get the active tab index |
| 489 | function get_active_tab_index(editor) result(index) |
| 490 | type(editor_state_t), intent(in) :: editor |
| 491 | integer(int32) :: index |
| 492 | index = editor%active_tab_index |
| 493 | end function get_active_tab_index |
| 494 | |
| 495 | ! Close a tab |
| 496 | subroutine close_tab(editor, tab_index) |
| 497 | type(editor_state_t), intent(inout) :: editor |
| 498 | integer(int32), intent(in) :: tab_index |
| 499 | type(tab_t), allocatable :: temp_tabs(:) |
| 500 | integer :: n_tabs, i, j |
| 501 | |
| 502 | n_tabs = size(editor%tabs) |
| 503 | if (tab_index < 1 .or. tab_index > n_tabs) return |
| 504 | |
| 505 | ! Cleanup the tab being closed |
| 506 | call cleanup_tab(editor%tabs(tab_index)) |
| 507 | |
| 508 | if (n_tabs == 1) then |
| 509 | ! Last tab - just deallocate the array |
| 510 | deallocate(editor%tabs) |
| 511 | allocate(editor%tabs(0)) |
| 512 | editor%active_tab_index = 0 |
| 513 | return |
| 514 | end if |
| 515 | |
| 516 | ! Create new array without this tab |
| 517 | allocate(temp_tabs(n_tabs - 1)) |
| 518 | j = 1 |
| 519 | do i = 1, n_tabs |
| 520 | if (i /= tab_index) then |
| 521 | temp_tabs(j) = editor%tabs(i) |
| 522 | j = j + 1 |
| 523 | end if |
| 524 | end do |
| 525 | |
| 526 | ! Replace tabs array |
| 527 | call move_alloc(temp_tabs, editor%tabs) |
| 528 | |
| 529 | ! Adjust active tab index |
| 530 | if (editor%active_tab_index > n_tabs - 1) then |
| 531 | editor%active_tab_index = n_tabs - 1 |
| 532 | else if (editor%active_tab_index >= tab_index) then |
| 533 | editor%active_tab_index = max(1, editor%active_tab_index - 1) |
| 534 | end if |
| 535 | |
| 536 | ! Switch to the new active tab |
| 537 | if (editor%active_tab_index > 0) then |
| 538 | call switch_to_tab(editor, editor%active_tab_index) |
| 539 | end if |
| 540 | end subroutine close_tab |
| 541 | |
| 542 | ! Split the active pane vertically |
| 543 | subroutine split_pane_vertical(editor) |
| 544 | type(editor_state_t), intent(inout) :: editor |
| 545 | type(pane_t), allocatable :: temp_panes(:) |
| 546 | integer :: tab_idx, pane_idx, n_panes, new_idx, i |
| 547 | real :: mid_x |
| 548 | |
| 549 | ! Get active tab |
| 550 | tab_idx = editor%active_tab_index |
| 551 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 552 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 553 | |
| 554 | ! Get active pane |
| 555 | pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 556 | n_panes = size(editor%tabs(tab_idx)%panes) |
| 557 | if (pane_idx < 1 .or. pane_idx > n_panes) return |
| 558 | |
| 559 | ! Check pane limit (maximum 6 panes per tab) |
| 560 | if (n_panes >= 6) return |
| 561 | |
| 562 | ! Ensure active pane has cursors from editor state |
| 563 | if (.not. allocated(editor%tabs(tab_idx)%panes(pane_idx)%cursors)) then |
| 564 | allocate(editor%tabs(tab_idx)%panes(pane_idx)%cursors(size(editor%cursors))) |
| 565 | editor%tabs(tab_idx)%panes(pane_idx)%cursors = editor%cursors |
| 566 | editor%tabs(tab_idx)%panes(pane_idx)%active_cursor = editor%active_cursor |
| 567 | end if |
| 568 | |
| 569 | ! Calculate split point |
| 570 | associate(active_pane => editor%tabs(tab_idx)%panes(pane_idx)) |
| 571 | mid_x = (active_pane%x_start + active_pane%x_end) / 2.0 |
| 572 | |
| 573 | ! Check minimum size (20 columns minimum) |
| 574 | ! Assuming screen is ~80 cols, 20 cols = 0.25 of width |
| 575 | if ((mid_x - active_pane%x_start) < 0.25 .or. & |
| 576 | (active_pane%x_end - mid_x) < 0.25) then |
| 577 | ! Too small to split |
| 578 | return |
| 579 | end if |
| 580 | |
| 581 | ! Resize array |
| 582 | allocate(temp_panes(n_panes + 1)) |
| 583 | temp_panes(1:n_panes) = editor%tabs(tab_idx)%panes(1:n_panes) |
| 584 | |
| 585 | ! Setup new pane (right half) |
| 586 | new_idx = n_panes + 1 |
| 587 | temp_panes(new_idx)%x_start = mid_x |
| 588 | temp_panes(new_idx)%x_end = active_pane%x_end |
| 589 | temp_panes(new_idx)%y_start = active_pane%y_start |
| 590 | temp_panes(new_idx)%y_end = active_pane%y_end |
| 591 | |
| 592 | ! Copy viewport and cursor state |
| 593 | temp_panes(new_idx)%viewport_line = active_pane%viewport_line |
| 594 | temp_panes(new_idx)%viewport_column = active_pane%viewport_column |
| 595 | if (allocated(active_pane%cursors)) then |
| 596 | allocate(temp_panes(new_idx)%cursors(size(active_pane%cursors))) |
| 597 | ! Deep copy each cursor to ensure all fields are copied |
| 598 | do i = 1, size(active_pane%cursors) |
| 599 | temp_panes(new_idx)%cursors(i)%line = active_pane%cursors(i)%line |
| 600 | temp_panes(new_idx)%cursors(i)%column = active_pane%cursors(i)%column |
| 601 | temp_panes(new_idx)%cursors(i)%desired_column = active_pane%cursors(i)%desired_column |
| 602 | temp_panes(new_idx)%cursors(i)%has_selection = active_pane%cursors(i)%has_selection |
| 603 | temp_panes(new_idx)%cursors(i)%selection_start_line = active_pane%cursors(i)%selection_start_line |
| 604 | temp_panes(new_idx)%cursors(i)%selection_start_col = active_pane%cursors(i)%selection_start_col |
| 605 | end do |
| 606 | temp_panes(new_idx)%active_cursor = active_pane%active_cursor |
| 607 | else |
| 608 | ! Initialize cursor if not already allocated |
| 609 | allocate(temp_panes(new_idx)%cursors(1)) |
| 610 | temp_panes(new_idx)%cursors(1)%line = 1 |
| 611 | temp_panes(new_idx)%cursors(1)%column = 1 |
| 612 | temp_panes(new_idx)%cursors(1)%desired_column = 1 |
| 613 | temp_panes(new_idx)%cursors(1)%has_selection = .false. |
| 614 | temp_panes(new_idx)%active_cursor = 1 |
| 615 | end if |
| 616 | |
| 617 | ! Initialize and copy buffer from active pane |
| 618 | call init_buffer(temp_panes(new_idx)%buffer) |
| 619 | ! Copy from active pane's buffer - make sure it's initialized |
| 620 | if (active_pane%buffer%size > 0) then |
| 621 | call copy_buffer(temp_panes(new_idx)%buffer, active_pane%buffer) |
| 622 | else |
| 623 | ! Active pane buffer not initialized, copy from tab buffer |
| 624 | call copy_buffer(temp_panes(new_idx)%buffer, editor%tabs(tab_idx)%buffer) |
| 625 | end if |
| 626 | if (allocated(active_pane%filename)) then |
| 627 | temp_panes(new_idx)%filename = active_pane%filename |
| 628 | end if |
| 629 | |
| 630 | temp_panes(new_idx)%is_active = .false. |
| 631 | |
| 632 | ! Update active pane (left half) |
| 633 | temp_panes(pane_idx)%x_end = mid_x |
| 634 | |
| 635 | ! Replace panes array |
| 636 | call move_alloc(temp_panes, editor%tabs(tab_idx)%panes) |
| 637 | |
| 638 | ! Clear all is_active flags first |
| 639 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 640 | editor%tabs(tab_idx)%panes(i)%is_active = .false. |
| 641 | end do |
| 642 | |
| 643 | ! Set new pane as active |
| 644 | editor%tabs(tab_idx)%panes(new_idx)%is_active = .true. |
| 645 | editor%tabs(tab_idx)%active_pane_index = new_idx |
| 646 | |
| 647 | ! Sync new pane to editor state |
| 648 | call sync_pane_to_editor(editor, tab_idx, new_idx) |
| 649 | end associate |
| 650 | end subroutine split_pane_vertical |
| 651 | |
| 652 | ! Split the active pane horizontally |
| 653 | subroutine split_pane_horizontal(editor) |
| 654 | type(editor_state_t), intent(inout) :: editor |
| 655 | type(pane_t), allocatable :: temp_panes(:) |
| 656 | integer :: tab_idx, pane_idx, n_panes, new_idx, i |
| 657 | real :: mid_y |
| 658 | |
| 659 | ! Get active tab |
| 660 | tab_idx = editor%active_tab_index |
| 661 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 662 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 663 | |
| 664 | ! Get active pane |
| 665 | pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 666 | n_panes = size(editor%tabs(tab_idx)%panes) |
| 667 | if (pane_idx < 1 .or. pane_idx > n_panes) return |
| 668 | |
| 669 | ! Check pane limit (maximum 6 panes per tab) |
| 670 | if (n_panes >= 6) return |
| 671 | |
| 672 | ! Ensure active pane has cursors from editor state |
| 673 | if (.not. allocated(editor%tabs(tab_idx)%panes(pane_idx)%cursors)) then |
| 674 | allocate(editor%tabs(tab_idx)%panes(pane_idx)%cursors(size(editor%cursors))) |
| 675 | editor%tabs(tab_idx)%panes(pane_idx)%cursors = editor%cursors |
| 676 | editor%tabs(tab_idx)%panes(pane_idx)%active_cursor = editor%active_cursor |
| 677 | end if |
| 678 | |
| 679 | ! Calculate split point |
| 680 | associate(active_pane => editor%tabs(tab_idx)%panes(pane_idx)) |
| 681 | mid_y = (active_pane%y_start + active_pane%y_end) / 2.0 |
| 682 | |
| 683 | ! Check minimum size (5 rows minimum) |
| 684 | ! Assuming screen is ~24 rows, 5 rows = 0.21 of height |
| 685 | if ((mid_y - active_pane%y_start) < 0.21 .or. & |
| 686 | (active_pane%y_end - mid_y) < 0.21) then |
| 687 | ! Too small to split |
| 688 | return |
| 689 | end if |
| 690 | |
| 691 | ! Resize array |
| 692 | allocate(temp_panes(n_panes + 1)) |
| 693 | temp_panes(1:n_panes) = editor%tabs(tab_idx)%panes(1:n_panes) |
| 694 | |
| 695 | ! Setup new pane (bottom half) |
| 696 | new_idx = n_panes + 1 |
| 697 | temp_panes(new_idx)%x_start = active_pane%x_start |
| 698 | temp_panes(new_idx)%x_end = active_pane%x_end |
| 699 | temp_panes(new_idx)%y_start = mid_y |
| 700 | temp_panes(new_idx)%y_end = active_pane%y_end |
| 701 | |
| 702 | ! Copy viewport and cursor state |
| 703 | temp_panes(new_idx)%viewport_line = active_pane%viewport_line |
| 704 | temp_panes(new_idx)%viewport_column = active_pane%viewport_column |
| 705 | if (allocated(active_pane%cursors)) then |
| 706 | allocate(temp_panes(new_idx)%cursors(size(active_pane%cursors))) |
| 707 | ! Deep copy each cursor to ensure all fields are copied |
| 708 | do i = 1, size(active_pane%cursors) |
| 709 | temp_panes(new_idx)%cursors(i)%line = active_pane%cursors(i)%line |
| 710 | temp_panes(new_idx)%cursors(i)%column = active_pane%cursors(i)%column |
| 711 | temp_panes(new_idx)%cursors(i)%desired_column = active_pane%cursors(i)%desired_column |
| 712 | temp_panes(new_idx)%cursors(i)%has_selection = active_pane%cursors(i)%has_selection |
| 713 | temp_panes(new_idx)%cursors(i)%selection_start_line = active_pane%cursors(i)%selection_start_line |
| 714 | temp_panes(new_idx)%cursors(i)%selection_start_col = active_pane%cursors(i)%selection_start_col |
| 715 | end do |
| 716 | temp_panes(new_idx)%active_cursor = active_pane%active_cursor |
| 717 | else |
| 718 | ! Initialize cursor if not already allocated |
| 719 | allocate(temp_panes(new_idx)%cursors(1)) |
| 720 | temp_panes(new_idx)%cursors(1)%line = 1 |
| 721 | temp_panes(new_idx)%cursors(1)%column = 1 |
| 722 | temp_panes(new_idx)%cursors(1)%desired_column = 1 |
| 723 | temp_panes(new_idx)%cursors(1)%has_selection = .false. |
| 724 | temp_panes(new_idx)%active_cursor = 1 |
| 725 | end if |
| 726 | |
| 727 | ! Initialize and copy buffer from active pane |
| 728 | call init_buffer(temp_panes(new_idx)%buffer) |
| 729 | ! Copy from active pane's buffer - make sure it's initialized |
| 730 | if (active_pane%buffer%size > 0) then |
| 731 | call copy_buffer(temp_panes(new_idx)%buffer, active_pane%buffer) |
| 732 | else |
| 733 | ! Active pane buffer not initialized, copy from tab buffer |
| 734 | call copy_buffer(temp_panes(new_idx)%buffer, editor%tabs(tab_idx)%buffer) |
| 735 | end if |
| 736 | if (allocated(active_pane%filename)) then |
| 737 | temp_panes(new_idx)%filename = active_pane%filename |
| 738 | end if |
| 739 | |
| 740 | temp_panes(new_idx)%is_active = .false. |
| 741 | |
| 742 | ! Update active pane (top half) |
| 743 | temp_panes(pane_idx)%y_end = mid_y |
| 744 | |
| 745 | ! Replace panes array |
| 746 | call move_alloc(temp_panes, editor%tabs(tab_idx)%panes) |
| 747 | |
| 748 | ! Clear all is_active flags first |
| 749 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 750 | editor%tabs(tab_idx)%panes(i)%is_active = .false. |
| 751 | end do |
| 752 | |
| 753 | ! Set new pane as active |
| 754 | editor%tabs(tab_idx)%panes(new_idx)%is_active = .true. |
| 755 | editor%tabs(tab_idx)%active_pane_index = new_idx |
| 756 | |
| 757 | ! Sync new pane to editor state |
| 758 | call sync_pane_to_editor(editor, tab_idx, new_idx) |
| 759 | end associate |
| 760 | end subroutine split_pane_horizontal |
| 761 | |
| 762 | ! Close the active pane |
| 763 | subroutine close_pane(editor) |
| 764 | type(editor_state_t), intent(inout) :: editor |
| 765 | type(pane_t), allocatable :: temp_panes(:) |
| 766 | integer :: tab_idx, pane_idx, n_panes, i, j |
| 767 | |
| 768 | ! Get active tab |
| 769 | tab_idx = editor%active_tab_index |
| 770 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 771 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 772 | |
| 773 | ! Get active pane |
| 774 | pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 775 | n_panes = size(editor%tabs(tab_idx)%panes) |
| 776 | if (pane_idx < 1 .or. pane_idx > n_panes) return |
| 777 | |
| 778 | ! If only one pane, check if it's the last tab |
| 779 | if (n_panes == 1) then |
| 780 | ! If this is the last tab, create an UNTITLED.txt tab instead of closing |
| 781 | if (size(editor%tabs) == 1) then |
| 782 | ! Create a new untitled tab |
| 783 | call create_untitled_tab(editor) |
| 784 | return |
| 785 | else |
| 786 | ! Multiple tabs exist, close this tab normally |
| 787 | call close_tab(editor, tab_idx) |
| 788 | return |
| 789 | end if |
| 790 | end if |
| 791 | |
| 792 | ! Remove the pane |
| 793 | allocate(temp_panes(n_panes - 1)) |
| 794 | j = 1 |
| 795 | do i = 1, n_panes |
| 796 | if (i /= pane_idx) then |
| 797 | temp_panes(j) = editor%tabs(tab_idx)%panes(i) |
| 798 | j = j + 1 |
| 799 | else |
| 800 | ! Clean up the pane being removed |
| 801 | if (allocated(editor%tabs(tab_idx)%panes(i)%cursors)) then |
| 802 | deallocate(editor%tabs(tab_idx)%panes(i)%cursors) |
| 803 | end if |
| 804 | end if |
| 805 | end do |
| 806 | |
| 807 | ! Replace panes array |
| 808 | call move_alloc(temp_panes, editor%tabs(tab_idx)%panes) |
| 809 | |
| 810 | ! Recalculate layout for remaining panes |
| 811 | call recalculate_pane_layout(editor%tabs(tab_idx)%panes) |
| 812 | |
| 813 | ! Determine new active pane index |
| 814 | if (pane_idx > size(editor%tabs(tab_idx)%panes)) then |
| 815 | ! Was the last pane, activate the new last pane |
| 816 | editor%tabs(tab_idx)%active_pane_index = size(editor%tabs(tab_idx)%panes) |
| 817 | else if (pane_idx > 1) then |
| 818 | ! Activate the previous pane |
| 819 | editor%tabs(tab_idx)%active_pane_index = pane_idx - 1 |
| 820 | else |
| 821 | ! Was the first pane, activate what is now the first pane |
| 822 | editor%tabs(tab_idx)%active_pane_index = 1 |
| 823 | end if |
| 824 | |
| 825 | ! Clear all is_active flags first |
| 826 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 827 | editor%tabs(tab_idx)%panes(i)%is_active = .false. |
| 828 | end do |
| 829 | |
| 830 | ! Set new active pane |
| 831 | editor%tabs(tab_idx)%panes(editor%tabs(tab_idx)%active_pane_index)%is_active = .true. |
| 832 | |
| 833 | ! Sync to editor state |
| 834 | call sync_pane_to_editor(editor, tab_idx, editor%tabs(tab_idx)%active_pane_index) |
| 835 | end subroutine close_pane |
| 836 | |
| 837 | ! Get the active pane indices |
| 838 | subroutine get_active_pane_indices(editor, tab_idx, pane_idx) |
| 839 | type(editor_state_t), intent(in) :: editor |
| 840 | integer, intent(out) :: tab_idx, pane_idx |
| 841 | |
| 842 | tab_idx = editor%active_tab_index |
| 843 | pane_idx = -1 |
| 844 | |
| 845 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) then |
| 846 | tab_idx = -1 |
| 847 | return |
| 848 | end if |
| 849 | |
| 850 | if (.not. allocated(editor%tabs(tab_idx)%panes)) then |
| 851 | tab_idx = -1 |
| 852 | return |
| 853 | end if |
| 854 | |
| 855 | pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 856 | if (pane_idx < 1 .or. pane_idx > size(editor%tabs(tab_idx)%panes)) then |
| 857 | pane_idx = -1 |
| 858 | end if |
| 859 | end subroutine get_active_pane_indices |
| 860 | |
| 861 | ! Helper to sync pane state to editor |
| 862 | subroutine sync_pane_to_editor(editor, tab_idx, pane_idx) |
| 863 | use text_buffer_module, only: buffer_get_line, buffer_get_line_count |
| 864 | type(editor_state_t), intent(inout) :: editor |
| 865 | integer, intent(in) :: tab_idx, pane_idx |
| 866 | integer :: i, line_count |
| 867 | character(len=:), allocatable :: line |
| 868 | |
| 869 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 870 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 871 | if (pane_idx < 1 .or. pane_idx > size(editor%tabs(tab_idx)%panes)) return |
| 872 | |
| 873 | associate(pane => editor%tabs(tab_idx)%panes(pane_idx)) |
| 874 | ! Copy pane state to editor |
| 875 | if (allocated(editor%cursors)) deallocate(editor%cursors) |
| 876 | if (allocated(pane%cursors) .and. size(pane%cursors) > 0) then |
| 877 | allocate(editor%cursors(size(pane%cursors))) |
| 878 | editor%cursors = pane%cursors |
| 879 | editor%active_cursor = min(pane%active_cursor, size(pane%cursors)) |
| 880 | if (editor%active_cursor < 1) editor%active_cursor = 1 |
| 881 | else |
| 882 | ! Initialize with single cursor if pane has no cursors |
| 883 | allocate(editor%cursors(1)) |
| 884 | editor%cursors(1)%line = 1 |
| 885 | editor%cursors(1)%column = 1 |
| 886 | editor%cursors(1)%desired_column = 1 |
| 887 | editor%cursors(1)%has_selection = .false. |
| 888 | editor%cursors(1)%selection_start_line = 1 |
| 889 | editor%cursors(1)%selection_start_col = 1 |
| 890 | editor%active_cursor = 1 |
| 891 | end if |
| 892 | |
| 893 | ! Validate cursor positions are within buffer bounds |
| 894 | line_count = buffer_get_line_count(editor%tabs(tab_idx)%buffer) |
| 895 | if (line_count > 0 .and. allocated(editor%cursors)) then |
| 896 | do i = 1, size(editor%cursors) |
| 897 | ! Clamp line to valid range |
| 898 | if (editor%cursors(i)%line > line_count) then |
| 899 | editor%cursors(i)%line = line_count |
| 900 | end if |
| 901 | if (editor%cursors(i)%line < 1) then |
| 902 | editor%cursors(i)%line = 1 |
| 903 | end if |
| 904 | |
| 905 | ! Clamp column to valid range for the line |
| 906 | line = buffer_get_line(editor%tabs(tab_idx)%buffer, editor%cursors(i)%line) |
| 907 | if (editor%cursors(i)%column > len(line) + 1) then |
| 908 | editor%cursors(i)%column = len(line) + 1 |
| 909 | end if |
| 910 | if (editor%cursors(i)%column < 1) then |
| 911 | editor%cursors(i)%column = 1 |
| 912 | end if |
| 913 | editor%cursors(i)%desired_column = editor%cursors(i)%column |
| 914 | |
| 915 | if (allocated(line)) deallocate(line) |
| 916 | end do |
| 917 | end if |
| 918 | editor%viewport_line = pane%viewport_line |
| 919 | editor%viewport_column = pane%viewport_column |
| 920 | |
| 921 | ! Sync filename from pane to editor |
| 922 | if (allocated(editor%filename)) deallocate(editor%filename) |
| 923 | if (allocated(pane%filename)) then |
| 924 | allocate(character(len=len(pane%filename)) :: editor%filename) |
| 925 | editor%filename = pane%filename |
| 926 | end if |
| 927 | end associate |
| 928 | end subroutine sync_pane_to_editor |
| 929 | |
| 930 | ! Helper to sync editor state back to the active pane |
| 931 | subroutine sync_editor_to_pane(editor) |
| 932 | type(editor_state_t), intent(inout) :: editor |
| 933 | integer :: tab_idx, pane_idx |
| 934 | |
| 935 | tab_idx = editor%active_tab_index |
| 936 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 937 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 938 | |
| 939 | pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 940 | if (pane_idx < 1 .or. pane_idx > size(editor%tabs(tab_idx)%panes)) return |
| 941 | |
| 942 | associate(pane => editor%tabs(tab_idx)%panes(pane_idx)) |
| 943 | ! Copy editor state back to pane |
| 944 | if (allocated(pane%cursors)) deallocate(pane%cursors) |
| 945 | if (allocated(editor%cursors) .and. size(editor%cursors) > 0) then |
| 946 | allocate(pane%cursors(size(editor%cursors))) |
| 947 | pane%cursors = editor%cursors |
| 948 | pane%active_cursor = min(editor%active_cursor, size(editor%cursors)) |
| 949 | if (pane%active_cursor < 1) pane%active_cursor = 1 |
| 950 | else |
| 951 | ! Should not happen, but ensure we have at least one cursor |
| 952 | allocate(pane%cursors(1)) |
| 953 | pane%cursors(1)%line = 1 |
| 954 | pane%cursors(1)%column = 1 |
| 955 | pane%cursors(1)%desired_column = 1 |
| 956 | pane%cursors(1)%has_selection = .false. |
| 957 | pane%cursors(1)%selection_start_line = 1 |
| 958 | pane%cursors(1)%selection_start_col = 1 |
| 959 | pane%active_cursor = 1 |
| 960 | end if |
| 961 | pane%viewport_line = editor%viewport_line |
| 962 | pane%viewport_column = editor%viewport_column |
| 963 | end associate |
| 964 | end subroutine sync_editor_to_pane |
| 965 | |
| 966 | ! Navigate to pane on the left |
| 967 | subroutine navigate_to_pane_left(editor) |
| 968 | type(editor_state_t), intent(inout) :: editor |
| 969 | integer :: tab_idx, current_idx, i |
| 970 | real :: current_x, best_x |
| 971 | integer :: best_idx |
| 972 | |
| 973 | tab_idx = editor%active_tab_index |
| 974 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 975 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 976 | |
| 977 | current_idx = editor%tabs(tab_idx)%active_pane_index |
| 978 | if (current_idx < 1 .or. current_idx > size(editor%tabs(tab_idx)%panes)) return |
| 979 | |
| 980 | current_x = (editor%tabs(tab_idx)%panes(current_idx)%x_start + & |
| 981 | editor%tabs(tab_idx)%panes(current_idx)%x_end) / 2.0 |
| 982 | |
| 983 | best_idx = -1 |
| 984 | best_x = -1.0 |
| 985 | |
| 986 | ! Find the nearest pane to the left |
| 987 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 988 | if (i /= current_idx) then |
| 989 | ! Check if pane is to the left |
| 990 | if (editor%tabs(tab_idx)%panes(i)%x_end <= current_x) then |
| 991 | if (best_idx == -1 .or. editor%tabs(tab_idx)%panes(i)%x_end > best_x) then |
| 992 | best_idx = i |
| 993 | best_x = editor%tabs(tab_idx)%panes(i)%x_end |
| 994 | end if |
| 995 | end if |
| 996 | end if |
| 997 | end do |
| 998 | |
| 999 | if (best_idx > 0) then |
| 1000 | call switch_to_pane(editor, tab_idx, best_idx) |
| 1001 | end if |
| 1002 | end subroutine navigate_to_pane_left |
| 1003 | |
| 1004 | ! Navigate to pane on the right |
| 1005 | subroutine navigate_to_pane_right(editor) |
| 1006 | type(editor_state_t), intent(inout) :: editor |
| 1007 | integer :: tab_idx, current_idx, i |
| 1008 | real :: current_x, best_x |
| 1009 | integer :: best_idx |
| 1010 | |
| 1011 | tab_idx = editor%active_tab_index |
| 1012 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1013 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 1014 | |
| 1015 | current_idx = editor%tabs(tab_idx)%active_pane_index |
| 1016 | if (current_idx < 1 .or. current_idx > size(editor%tabs(tab_idx)%panes)) return |
| 1017 | |
| 1018 | current_x = (editor%tabs(tab_idx)%panes(current_idx)%x_start + & |
| 1019 | editor%tabs(tab_idx)%panes(current_idx)%x_end) / 2.0 |
| 1020 | |
| 1021 | best_idx = -1 |
| 1022 | best_x = 2.0 ! Start with value beyond max |
| 1023 | |
| 1024 | ! Find the nearest pane to the right |
| 1025 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 1026 | if (i /= current_idx) then |
| 1027 | ! Check if pane is to the right |
| 1028 | if (editor%tabs(tab_idx)%panes(i)%x_start >= current_x) then |
| 1029 | if (best_idx == -1 .or. editor%tabs(tab_idx)%panes(i)%x_start < best_x) then |
| 1030 | best_idx = i |
| 1031 | best_x = editor%tabs(tab_idx)%panes(i)%x_start |
| 1032 | end if |
| 1033 | end if |
| 1034 | end if |
| 1035 | end do |
| 1036 | |
| 1037 | if (best_idx > 0) then |
| 1038 | call switch_to_pane(editor, tab_idx, best_idx) |
| 1039 | end if |
| 1040 | end subroutine navigate_to_pane_right |
| 1041 | |
| 1042 | ! Navigate to pane above |
| 1043 | subroutine navigate_to_pane_up(editor) |
| 1044 | type(editor_state_t), intent(inout) :: editor |
| 1045 | integer :: tab_idx, current_idx, i |
| 1046 | real :: current_y, best_y |
| 1047 | integer :: best_idx |
| 1048 | |
| 1049 | tab_idx = editor%active_tab_index |
| 1050 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1051 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 1052 | |
| 1053 | current_idx = editor%tabs(tab_idx)%active_pane_index |
| 1054 | if (current_idx < 1 .or. current_idx > size(editor%tabs(tab_idx)%panes)) return |
| 1055 | |
| 1056 | current_y = (editor%tabs(tab_idx)%panes(current_idx)%y_start + & |
| 1057 | editor%tabs(tab_idx)%panes(current_idx)%y_end) / 2.0 |
| 1058 | |
| 1059 | best_idx = -1 |
| 1060 | best_y = -1.0 |
| 1061 | |
| 1062 | ! Find the nearest pane above |
| 1063 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 1064 | if (i /= current_idx) then |
| 1065 | ! Check if pane is above |
| 1066 | if (editor%tabs(tab_idx)%panes(i)%y_end <= current_y) then |
| 1067 | if (best_idx == -1 .or. editor%tabs(tab_idx)%panes(i)%y_end > best_y) then |
| 1068 | best_idx = i |
| 1069 | best_y = editor%tabs(tab_idx)%panes(i)%y_end |
| 1070 | end if |
| 1071 | end if |
| 1072 | end if |
| 1073 | end do |
| 1074 | |
| 1075 | if (best_idx > 0) then |
| 1076 | call switch_to_pane(editor, tab_idx, best_idx) |
| 1077 | end if |
| 1078 | end subroutine navigate_to_pane_up |
| 1079 | |
| 1080 | ! Navigate to pane below |
| 1081 | subroutine navigate_to_pane_down(editor) |
| 1082 | type(editor_state_t), intent(inout) :: editor |
| 1083 | integer :: tab_idx, current_idx, i |
| 1084 | real :: current_y, best_y |
| 1085 | integer :: best_idx |
| 1086 | |
| 1087 | tab_idx = editor%active_tab_index |
| 1088 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1089 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 1090 | |
| 1091 | current_idx = editor%tabs(tab_idx)%active_pane_index |
| 1092 | if (current_idx < 1 .or. current_idx > size(editor%tabs(tab_idx)%panes)) return |
| 1093 | |
| 1094 | current_y = (editor%tabs(tab_idx)%panes(current_idx)%y_start + & |
| 1095 | editor%tabs(tab_idx)%panes(current_idx)%y_end) / 2.0 |
| 1096 | |
| 1097 | best_idx = -1 |
| 1098 | best_y = 2.0 ! Start with value beyond max |
| 1099 | |
| 1100 | ! Find the nearest pane below |
| 1101 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 1102 | if (i /= current_idx) then |
| 1103 | ! Check if pane is below |
| 1104 | if (editor%tabs(tab_idx)%panes(i)%y_start >= current_y) then |
| 1105 | if (best_idx == -1 .or. editor%tabs(tab_idx)%panes(i)%y_start < best_y) then |
| 1106 | best_idx = i |
| 1107 | best_y = editor%tabs(tab_idx)%panes(i)%y_start |
| 1108 | end if |
| 1109 | end if |
| 1110 | end if |
| 1111 | end do |
| 1112 | |
| 1113 | if (best_idx > 0) then |
| 1114 | call switch_to_pane(editor, tab_idx, best_idx) |
| 1115 | end if |
| 1116 | end subroutine navigate_to_pane_down |
| 1117 | |
| 1118 | ! Helper to switch to a specific pane |
| 1119 | subroutine switch_to_pane(editor, tab_idx, pane_idx) |
| 1120 | type(editor_state_t), intent(inout) :: editor |
| 1121 | integer, intent(in) :: tab_idx, pane_idx |
| 1122 | integer :: i, old_pane_idx |
| 1123 | |
| 1124 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1125 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 1126 | if (pane_idx < 1 .or. pane_idx > size(editor%tabs(tab_idx)%panes)) return |
| 1127 | |
| 1128 | ! Don't do anything if we're already in this pane |
| 1129 | if (pane_idx == editor%tabs(tab_idx)%active_pane_index) return |
| 1130 | |
| 1131 | ! Save current editor state to the old pane before switching |
| 1132 | old_pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 1133 | if (old_pane_idx > 0 .and. old_pane_idx <= size(editor%tabs(tab_idx)%panes)) then |
| 1134 | call sync_editor_to_pane(editor) |
| 1135 | end if |
| 1136 | |
| 1137 | ! Clear all is_active flags |
| 1138 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 1139 | editor%tabs(tab_idx)%panes(i)%is_active = .false. |
| 1140 | end do |
| 1141 | |
| 1142 | ! Set new active pane |
| 1143 | editor%tabs(tab_idx)%panes(pane_idx)%is_active = .true. |
| 1144 | editor%tabs(tab_idx)%active_pane_index = pane_idx |
| 1145 | |
| 1146 | ! Load the new pane's state to editor |
| 1147 | call sync_pane_to_editor(editor, tab_idx, pane_idx) |
| 1148 | end subroutine switch_to_pane |
| 1149 | |
| 1150 | ! Helper to switch to a specific pane with buffer synchronization |
| 1151 | subroutine switch_to_pane_with_buffer(editor, tab_idx, pane_idx, buffer) |
| 1152 | type(editor_state_t), intent(inout) :: editor |
| 1153 | integer, intent(in) :: tab_idx, pane_idx |
| 1154 | type(buffer_t), intent(inout) :: buffer |
| 1155 | integer :: i, old_pane_idx |
| 1156 | |
| 1157 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1158 | if (.not. allocated(editor%tabs(tab_idx)%panes)) return |
| 1159 | if (pane_idx < 1 .or. pane_idx > size(editor%tabs(tab_idx)%panes)) return |
| 1160 | |
| 1161 | ! Don't do anything if we're already in this pane |
| 1162 | if (pane_idx == editor%tabs(tab_idx)%active_pane_index) return |
| 1163 | |
| 1164 | ! Save current buffer and editor state to the old pane before switching |
| 1165 | old_pane_idx = editor%tabs(tab_idx)%active_pane_index |
| 1166 | if (old_pane_idx > 0 .and. old_pane_idx <= size(editor%tabs(tab_idx)%panes)) then |
| 1167 | ! Save buffer to old pane |
| 1168 | call copy_buffer(editor%tabs(tab_idx)%panes(old_pane_idx)%buffer, buffer) |
| 1169 | |
| 1170 | ! Sync buffer to all other instances of this file |
| 1171 | if (allocated(editor%tabs(tab_idx)%panes(old_pane_idx)%filename)) then |
| 1172 | call sync_buffer_to_all_instances(editor, editor%tabs(tab_idx)%panes(old_pane_idx)%filename, buffer) |
| 1173 | end if |
| 1174 | |
| 1175 | ! Save cursor/viewport state |
| 1176 | call sync_editor_to_pane(editor) |
| 1177 | end if |
| 1178 | |
| 1179 | ! Clear all is_active flags |
| 1180 | do i = 1, size(editor%tabs(tab_idx)%panes) |
| 1181 | editor%tabs(tab_idx)%panes(i)%is_active = .false. |
| 1182 | end do |
| 1183 | |
| 1184 | ! Set new active pane |
| 1185 | editor%tabs(tab_idx)%panes(pane_idx)%is_active = .true. |
| 1186 | editor%tabs(tab_idx)%active_pane_index = pane_idx |
| 1187 | |
| 1188 | ! Load the new pane's buffer |
| 1189 | call copy_buffer(buffer, editor%tabs(tab_idx)%panes(pane_idx)%buffer) |
| 1190 | |
| 1191 | ! Load the new pane's cursor/viewport state to editor |
| 1192 | call sync_pane_to_editor(editor, tab_idx, pane_idx) |
| 1193 | |
| 1194 | ! Update editor filename if pane has different file |
| 1195 | if (allocated(editor%tabs(tab_idx)%panes(pane_idx)%filename)) then |
| 1196 | if (allocated(editor%filename)) deallocate(editor%filename) |
| 1197 | allocate(character(len=len(editor%tabs(tab_idx)%panes(pane_idx)%filename)) :: editor%filename) |
| 1198 | editor%filename = editor%tabs(tab_idx)%panes(pane_idx)%filename |
| 1199 | end if |
| 1200 | end subroutine switch_to_pane_with_buffer |
| 1201 | |
| 1202 | ! Sync buffer to all panes/tabs that have the same file open |
| 1203 | ! This enables live updates when the same file is open in multiple locations |
| 1204 | subroutine sync_buffer_to_all_instances(editor, filename, buffer) |
| 1205 | type(editor_state_t), intent(inout) :: editor |
| 1206 | character(len=*), intent(in) :: filename |
| 1207 | type(buffer_t), intent(in) :: buffer |
| 1208 | integer :: tab_idx, pane_idx |
| 1209 | character(len=:), allocatable :: normalized_filename |
| 1210 | |
| 1211 | ! Normalize filename for comparison (trim whitespace) |
| 1212 | normalized_filename = trim(filename) |
| 1213 | if (len_trim(normalized_filename) == 0) return |
| 1214 | |
| 1215 | ! Loop through all tabs |
| 1216 | do tab_idx = 1, size(editor%tabs) |
| 1217 | ! Update tab's buffer if it matches |
| 1218 | if (allocated(editor%tabs(tab_idx)%filename)) then |
| 1219 | if (trim(editor%tabs(tab_idx)%filename) == normalized_filename) then |
| 1220 | call copy_buffer(editor%tabs(tab_idx)%buffer, buffer) |
| 1221 | editor%tabs(tab_idx)%modified = .true. |
| 1222 | end if |
| 1223 | end if |
| 1224 | |
| 1225 | ! Loop through all panes in this tab |
| 1226 | if (allocated(editor%tabs(tab_idx)%panes)) then |
| 1227 | do pane_idx = 1, size(editor%tabs(tab_idx)%panes) |
| 1228 | ! Check if this pane has the same file open |
| 1229 | if (allocated(editor%tabs(tab_idx)%panes(pane_idx)%filename)) then |
| 1230 | if (trim(editor%tabs(tab_idx)%panes(pane_idx)%filename) == normalized_filename) then |
| 1231 | ! Skip the currently active pane (already has the latest buffer) |
| 1232 | if (tab_idx == editor%active_tab_index .and. & |
| 1233 | pane_idx == editor%tabs(tab_idx)%active_pane_index) then |
| 1234 | cycle |
| 1235 | end if |
| 1236 | |
| 1237 | ! Copy buffer to this pane (preserves cursor/viewport) |
| 1238 | call copy_buffer(editor%tabs(tab_idx)%panes(pane_idx)%buffer, buffer) |
| 1239 | end if |
| 1240 | end if |
| 1241 | end do |
| 1242 | end if |
| 1243 | end do |
| 1244 | end subroutine sync_buffer_to_all_instances |
| 1245 | |
| 1246 | ! Create an untitled tab (replaces current tab) |
| 1247 | subroutine create_untitled_tab(editor) |
| 1248 | use text_buffer_module, only: init_buffer, cleanup_buffer |
| 1249 | type(editor_state_t), intent(inout) :: editor |
| 1250 | integer :: tab_idx |
| 1251 | |
| 1252 | tab_idx = editor%active_tab_index |
| 1253 | if (tab_idx < 1 .or. tab_idx > size(editor%tabs)) return |
| 1254 | |
| 1255 | ! Clean up the old tab's buffer |
| 1256 | call cleanup_buffer(editor%tabs(tab_idx)%buffer) |
| 1257 | |
| 1258 | ! Reinitialize as untitled |
| 1259 | if (allocated(editor%tabs(tab_idx)%filename)) deallocate(editor%tabs(tab_idx)%filename) |
| 1260 | allocate(character(len=12) :: editor%tabs(tab_idx)%filename) |
| 1261 | editor%tabs(tab_idx)%filename = "UNTITLED.txt" |
| 1262 | editor%tabs(tab_idx)%modified = .false. |
| 1263 | |
| 1264 | ! Initialize empty buffer |
| 1265 | call init_buffer(editor%tabs(tab_idx)%buffer) |
| 1266 | |
| 1267 | ! Reset panes |
| 1268 | if (allocated(editor%tabs(tab_idx)%panes)) then |
| 1269 | deallocate(editor%tabs(tab_idx)%panes) |
| 1270 | end if |
| 1271 | allocate(editor%tabs(tab_idx)%panes(1)) |
| 1272 | editor%tabs(tab_idx)%panes(1)%x_start = 0.0 |
| 1273 | editor%tabs(tab_idx)%panes(1)%y_start = 0.0 |
| 1274 | editor%tabs(tab_idx)%panes(1)%x_end = 1.0 |
| 1275 | editor%tabs(tab_idx)%panes(1)%y_end = 1.0 |
| 1276 | editor%tabs(tab_idx)%panes(1)%is_active = .true. |
| 1277 | editor%tabs(tab_idx)%panes(1)%viewport_line = 1 |
| 1278 | editor%tabs(tab_idx)%panes(1)%viewport_column = 1 |
| 1279 | |
| 1280 | ! Initialize cursor |
| 1281 | allocate(editor%tabs(tab_idx)%panes(1)%cursors(1)) |
| 1282 | editor%tabs(tab_idx)%panes(1)%cursors(1)%line = 1 |
| 1283 | editor%tabs(tab_idx)%panes(1)%cursors(1)%column = 1 |
| 1284 | editor%tabs(tab_idx)%panes(1)%cursors(1)%desired_column = 1 |
| 1285 | editor%tabs(tab_idx)%panes(1)%cursors(1)%has_selection = .false. |
| 1286 | editor%tabs(tab_idx)%panes(1)%active_cursor = 1 |
| 1287 | editor%tabs(tab_idx)%active_pane_index = 1 |
| 1288 | |
| 1289 | ! Initialize screen coordinates for the pane |
| 1290 | editor%tabs(tab_idx)%panes(1)%screen_col = 1 |
| 1291 | editor%tabs(tab_idx)%panes(1)%screen_row = 2 ! After tab bar |
| 1292 | editor%tabs(tab_idx)%panes(1)%screen_width = 80 ! Default width |
| 1293 | editor%tabs(tab_idx)%panes(1)%screen_height = 22 ! Default height |
| 1294 | |
| 1295 | ! Sync to editor |
| 1296 | call sync_pane_to_editor(editor, tab_idx, 1) |
| 1297 | end subroutine create_untitled_tab |
| 1298 | |
| 1299 | ! Recalculate pane layout after closing a pane |
| 1300 | subroutine recalculate_pane_layout(panes) |
| 1301 | type(pane_t), intent(inout) :: panes(:) |
| 1302 | integer :: n_panes, i |
| 1303 | real :: x_min, x_max, y_min, y_max |
| 1304 | logical :: is_vertical_split, is_horizontal_split |
| 1305 | real :: pane_width, pane_height |
| 1306 | |
| 1307 | n_panes = size(panes) |
| 1308 | |
| 1309 | ! If only one pane, make it full screen |
| 1310 | if (n_panes == 1) then |
| 1311 | panes(1)%x_start = 0.0 |
| 1312 | panes(1)%x_end = 1.0 |
| 1313 | panes(1)%y_start = 0.0 |
| 1314 | panes(1)%y_end = 1.0 |
| 1315 | return |
| 1316 | end if |
| 1317 | |
| 1318 | ! Determine the layout type by checking if panes share x or y coordinates |
| 1319 | is_vertical_split = .false. |
| 1320 | is_horizontal_split = .false. |
| 1321 | |
| 1322 | ! Check if all panes share same y coordinates (vertical split - side by side) |
| 1323 | y_min = panes(1)%y_start |
| 1324 | y_max = panes(1)%y_end |
| 1325 | is_vertical_split = .true. |
| 1326 | do i = 2, n_panes |
| 1327 | if (abs(panes(i)%y_start - y_min) > 0.01 .or. abs(panes(i)%y_end - y_max) > 0.01) then |
| 1328 | is_vertical_split = .false. |
| 1329 | exit |
| 1330 | end if |
| 1331 | end do |
| 1332 | |
| 1333 | ! Check if all panes share same x coordinates (horizontal split - top/bottom) |
| 1334 | if (.not. is_vertical_split) then |
| 1335 | x_min = panes(1)%x_start |
| 1336 | x_max = panes(1)%x_end |
| 1337 | is_horizontal_split = .true. |
| 1338 | do i = 2, n_panes |
| 1339 | if (abs(panes(i)%x_start - x_min) > 0.01 .or. abs(panes(i)%x_end - x_max) > 0.01) then |
| 1340 | is_horizontal_split = .false. |
| 1341 | exit |
| 1342 | end if |
| 1343 | end do |
| 1344 | end if |
| 1345 | |
| 1346 | ! Recalculate based on layout type |
| 1347 | if (is_vertical_split) then |
| 1348 | ! Panes are side by side - redistribute horizontally |
| 1349 | pane_width = 1.0 / real(n_panes) |
| 1350 | do i = 1, n_panes |
| 1351 | panes(i)%x_start = real(i - 1) * pane_width |
| 1352 | panes(i)%x_end = real(i) * pane_width |
| 1353 | panes(i)%y_start = 0.0 |
| 1354 | panes(i)%y_end = 1.0 |
| 1355 | end do |
| 1356 | else if (is_horizontal_split) then |
| 1357 | ! Panes are top/bottom - redistribute vertically |
| 1358 | pane_height = 1.0 / real(n_panes) |
| 1359 | do i = 1, n_panes |
| 1360 | panes(i)%x_start = 0.0 |
| 1361 | panes(i)%x_end = 1.0 |
| 1362 | panes(i)%y_start = real(i - 1) * pane_height |
| 1363 | panes(i)%y_end = real(i) * pane_height |
| 1364 | end do |
| 1365 | else |
| 1366 | ! Mixed layout - try to expand panes to fill gaps |
| 1367 | ! For now, just ensure at least the first pane is properly sized |
| 1368 | ! This is a simplified approach - a more sophisticated algorithm |
| 1369 | ! would detect and fill gaps properly |
| 1370 | |
| 1371 | ! Find the overall bounds |
| 1372 | x_min = 1.0 |
| 1373 | x_max = 0.0 |
| 1374 | y_min = 1.0 |
| 1375 | y_max = 0.0 |
| 1376 | do i = 1, n_panes |
| 1377 | x_min = min(x_min, panes(i)%x_start) |
| 1378 | x_max = max(x_max, panes(i)%x_end) |
| 1379 | y_min = min(y_min, panes(i)%y_start) |
| 1380 | y_max = max(y_max, panes(i)%y_end) |
| 1381 | end do |
| 1382 | |
| 1383 | ! If we have exactly 2 panes, try to expand them smartly |
| 1384 | if (n_panes == 2) then |
| 1385 | ! Check if they're adjacent horizontally |
| 1386 | if (abs(panes(1)%x_end - panes(2)%x_start) < 0.01 .or. & |
| 1387 | abs(panes(2)%x_end - panes(1)%x_start) < 0.01) then |
| 1388 | ! Expand vertically |
| 1389 | panes(1)%y_start = 0.0 |
| 1390 | panes(1)%y_end = 1.0 |
| 1391 | panes(2)%y_start = 0.0 |
| 1392 | panes(2)%y_end = 1.0 |
| 1393 | ! Check if they're adjacent vertically |
| 1394 | else if (abs(panes(1)%y_end - panes(2)%y_start) < 0.01 .or. & |
| 1395 | abs(panes(2)%y_end - panes(1)%y_start) < 0.01) then |
| 1396 | ! Expand horizontally |
| 1397 | panes(1)%x_start = 0.0 |
| 1398 | panes(1)%x_end = 1.0 |
| 1399 | panes(2)%x_start = 0.0 |
| 1400 | panes(2)%x_end = 1.0 |
| 1401 | end if |
| 1402 | end if |
| 1403 | end if |
| 1404 | end subroutine recalculate_pane_layout |
| 1405 | |
| 1406 | end module editor_state_module |