70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
#ifdef HAVE_CONFIG
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# include "config.h"
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#endif
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#include "Elm_Code.h"
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#include "elm_code_widget_private.h"
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Elm_Code_Widget_Change_Info *
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_elm_code_widget_undo_info_copy(Elm_Code_Widget_Change_Info *info)
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{
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Elm_Code_Widget_Change_Info *copy;
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copy = calloc(1, sizeof(*info));
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memcpy(copy, info, sizeof(*info));
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copy->content = malloc(sizeof(char) * (info->length + 1));
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strncpy(copy->content, info->content, info->length);
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return copy;
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}
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void
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_elm_code_widget_undo_change_add(Evas_Object *widget,
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Elm_Code_Widget_Change_Info *info)
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{
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Elm_Code_Widget_Data *pd;
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Elm_Code_Widget_Change_Info *info_copy;
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info_copy = _elm_code_widget_undo_info_copy(info);
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pd = eo_data_scope_get(widget, ELM_CODE_WIDGET_CLASS);
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pd->undo_stack_ptr = eina_list_prepend(pd->undo_stack_ptr, info_copy);
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pd->undo_stack = pd->undo_stack_ptr;
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}
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static void
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_elm_code_widget_undo_change(Evas_Object *widget,
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Elm_Code_Widget_Change_Info *info)
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{
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if (info->insert)
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{
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elm_code_widget_selection_start(widget, info->start_line, info->start_col);
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elm_code_widget_selection_end(widget, info->end_line, info->end_col);
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elm_code_widget_selection_delete(widget);
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}
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else
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{
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elm_code_widget_cursor_position_set(widget, info->start_col, info->start_line);
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_elm_code_widget_text_at_cursor_insert(widget, info->content, info->length);
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}
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}
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static void
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_elm_code_widget_undo(Eo *obj EINA_UNUSED, Elm_Code_Widget_Data *pd)
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{
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Elm_Code_Widget_Change_Info *info;
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if (!pd->undo_stack_ptr)
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return;
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info = eina_list_data_get(pd->undo_stack_ptr);
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_elm_code_widget_undo_change(obj, info);
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if (eina_list_next(pd->undo_stack_ptr))
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pd->undo_stack_ptr = eina_list_next(pd->undo_stack_ptr);
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else
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pd->undo_stack_ptr = NULL;
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}
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