/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4; coding: utf-8 -*- * * mootextbuffer.c * * Copyright (C) 2004-2005 by Yevgen Muntyan * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * See COPYING file that comes with this distribution. */ #define MOOEDIT_COMPILATION #include "mooedit/moolinebuffer.h" #include "mooedit/mootextiter.h" #include "mooedit/moohighlighter.h" #include "mooutils/moomarshals.h" #include "mooutils/mooundomanager.h" #include "mooutils/mooutils-gobject.h" #include struct _MooTextBufferPrivate { gboolean has_selection; gboolean has_text; MooHighlighter *hl; MooLang *lang; gboolean may_apply_tag; gboolean do_highlight; gboolean check_brackets; guint num_brackets; gunichar *left_brackets, *right_brackets; GtkTextTag *correct_match_tag; GtkTextTag *incorrect_match_tag; GtkTextMark *bracket_mark[4]; MooBracketMatchType bracket_found; LineBuffer *line_buf; guint interactive; guint non_interactive; int cursor_moved_frozen; gboolean cursor_moved; MooUndoMgr *undo_mgr; gpointer modifying_action; int move_cursor_to; #if 0 int cursor_was_at; #endif }; static void moo_text_buffer_finalize (GObject *object); static void moo_text_buffer_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void moo_text_buffer_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void moo_text_buffer_cursor_moved (MooTextBuffer *buffer, const GtkTextIter *iter); static void moo_text_buffer_mark_set (GtkTextBuffer *buffer, const GtkTextIter *iter, GtkTextMark *mark); static void moo_text_buffer_insert_text (GtkTextBuffer *buffer, GtkTextIter *pos, const gchar *text, gint length); static void moo_text_buffer_apply_tag (GtkTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start, const GtkTextIter *end); static void moo_text_buffer_delete_range (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end); static void moo_text_buffer_begin_user_action (GtkTextBuffer *buffer); static void moo_text_buffer_end_user_action (GtkTextBuffer *buffer); static void moo_text_buffer_modified_changed (GtkTextBuffer *buffer); static void moo_text_buffer_queue_highlight (MooTextBuffer *buffer); static void cursor_moved (MooTextBuffer *buffer, const GtkTextIter *iter); static void freeze_cursor_moved (MooTextBuffer *buffer); static void thaw_cursor_moved (MooTextBuffer *buffer); static guint INSERT_ACTION_TYPE; static guint DELETE_ACTION_TYPE; static void init_undo_actions (void); static MooUndoAction *insert_action_new (GtkTextBuffer *buffer, GtkTextIter *pos, const char *text, int length); static MooUndoAction *delete_action_new (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end); #if 0 static void before_undo_redo (MooTextBuffer *buffer); #endif static void after_undo_redo (MooTextBuffer *buffer); enum { CURSOR_MOVED, SELECTION_CHANGED, HIGHLIGHTING_CHANGED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL]; enum { PROP_0, PROP_CHECK_BRACKETS, PROP_BRACKET_MATCH_STYLE, PROP_BRACKET_MISMATCH_STYLE, PROP_HAS_TEXT, PROP_HAS_SELECTION, PROP_LANG }; /* MOO_TYPE_TEXT_BUFFER */ G_DEFINE_TYPE (MooTextBuffer, moo_text_buffer, GTK_TYPE_TEXT_BUFFER) static void moo_text_buffer_class_init (MooTextBufferClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GtkTextBufferClass *buffer_class = GTK_TEXT_BUFFER_CLASS (klass); init_undo_actions (); gobject_class->set_property = moo_text_buffer_set_property; gobject_class->get_property = moo_text_buffer_get_property; gobject_class->finalize = moo_text_buffer_finalize; buffer_class->mark_set = moo_text_buffer_mark_set; buffer_class->insert_text = moo_text_buffer_insert_text; buffer_class->delete_range = moo_text_buffer_delete_range; buffer_class->apply_tag = moo_text_buffer_apply_tag; buffer_class->begin_user_action = moo_text_buffer_begin_user_action; buffer_class->end_user_action = moo_text_buffer_end_user_action; buffer_class->modified_changed = moo_text_buffer_modified_changed; klass->cursor_moved = moo_text_buffer_cursor_moved; g_object_class_install_property (gobject_class, PROP_CHECK_BRACKETS, g_param_spec_boolean ("check-brackets", "check-brackets", "check-brackets", TRUE, G_PARAM_CONSTRUCT | G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_BRACKET_MATCH_STYLE, g_param_spec_boxed ("bracket-match-style", "bracket-match-style", "bracket-match-style", MOO_TYPE_TEXT_STYLE, G_PARAM_CONSTRUCT | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_BRACKET_MISMATCH_STYLE, g_param_spec_boxed ("bracket-mismatch-style", "bracket-mismatch-style", "bracket-mismatch-style", MOO_TYPE_TEXT_STYLE, G_PARAM_CONSTRUCT | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_HAS_TEXT, g_param_spec_boolean ("has-text", "has-text", "has-text", FALSE, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_HAS_SELECTION, g_param_spec_boolean ("has-selection", "has-selection", "has-selection", FALSE, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_LANG, g_param_spec_boxed ("lang", "lang", "lang", MOO_TYPE_LANG, G_PARAM_READWRITE)); signals[CURSOR_MOVED] = g_signal_new ("cursor-moved", G_OBJECT_CLASS_TYPE (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (MooTextBufferClass, cursor_moved), NULL, NULL, _moo_marshal_VOID__BOXED, G_TYPE_NONE, 1, GTK_TYPE_TEXT_ITER); signals[SELECTION_CHANGED] = g_signal_new ("selection-changed", G_OBJECT_CLASS_TYPE (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (MooTextBufferClass, selection_changed), NULL, NULL, _moo_marshal_VOID__VOID, G_TYPE_NONE, 0); signals[HIGHLIGHTING_CHANGED] = moo_signal_new_cb ("highlighting-changed", G_OBJECT_CLASS_TYPE (klass), G_SIGNAL_RUN_LAST, NULL, NULL, NULL, _moo_marshal_VOID__BOXED_BOXED, G_TYPE_NONE, 2, GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE); } static void moo_text_buffer_init (MooTextBuffer *buffer) { buffer->priv = g_new0 (MooTextBufferPrivate, 1); buffer->priv->line_buf = moo_line_buffer_new (); buffer->priv->do_highlight = TRUE; buffer->priv->hl = moo_highlighter_new (GTK_TEXT_BUFFER (buffer), buffer->priv->line_buf, NULL); buffer->priv->bracket_found = MOO_BRACKET_MATCH_NONE; buffer->priv->undo_mgr = moo_undo_mgr_new (buffer); buffer->priv->move_cursor_to = -1; #if 0 g_signal_connect_swapped (buffer->priv->undo_mgr, "undo", G_CALLBACK (before_undo_redo), buffer); g_signal_connect_swapped (buffer->priv->undo_mgr, "redo", G_CALLBACK (before_undo_redo), buffer); #endif g_signal_connect_data (buffer->priv->undo_mgr, "undo", G_CALLBACK (after_undo_redo), buffer, NULL, G_CONNECT_AFTER | G_CONNECT_SWAPPED); g_signal_connect_data (buffer->priv->undo_mgr, "redo", G_CALLBACK (after_undo_redo), buffer, NULL, G_CONNECT_AFTER | G_CONNECT_SWAPPED); } static void moo_text_buffer_finalize (GObject *object) { MooTextBuffer *buffer = MOO_TEXT_BUFFER (object); moo_highlighter_destroy (buffer->priv->hl, FALSE); moo_line_buffer_free (buffer->priv->line_buf); g_free (buffer->priv->left_brackets); g_free (buffer->priv->right_brackets); #if 0 g_signal_handlers_disconnect_by_func (buffer->priv->undo_mgr, (gpointer) before_undo_redo, buffer); #endif g_signal_handlers_disconnect_by_func (buffer->priv->undo_mgr, (gpointer) after_undo_redo, buffer); g_object_unref (buffer->priv->undo_mgr); g_free (buffer->priv); buffer->priv = NULL; G_OBJECT_CLASS (moo_text_buffer_parent_class)->finalize (object); } GtkTextBuffer* moo_text_buffer_new (GtkTextTagTable *table) { return g_object_new (MOO_TYPE_TEXT_BUFFER, "tag-table", table, NULL); } gpointer moo_text_buffer_get_undo_mgr (MooTextBuffer *buffer) { g_return_val_if_fail (MOO_IS_TEXT_BUFFER (buffer), NULL); return buffer->priv->undo_mgr; } static void moo_text_buffer_begin_user_action (GtkTextBuffer *text_buffer) { MooTextBuffer *buffer = MOO_TEXT_BUFFER (text_buffer); moo_text_buffer_freeze (buffer); moo_undo_mgr_start_group (buffer->priv->undo_mgr); } static void moo_text_buffer_end_user_action (GtkTextBuffer *text_buffer) { MooTextBuffer *buffer = MOO_TEXT_BUFFER (text_buffer); moo_text_buffer_thaw (buffer); moo_undo_mgr_end_group (buffer->priv->undo_mgr); } static void moo_text_buffer_modified_changed (GtkTextBuffer *text_buffer) { if (!gtk_text_buffer_get_modified (text_buffer)) MOO_TEXT_BUFFER(text_buffer)->priv->modifying_action = NULL; } static void update_selection (MooTextBuffer *buffer) { GtkTextBuffer *text_buffer = GTK_TEXT_BUFFER (buffer); gboolean has_selection; gboolean selection_changed = TRUE; has_selection = gtk_text_buffer_get_selection_bounds (text_buffer, NULL, NULL) != 0; selection_changed = has_selection || buffer->priv->has_selection; if (has_selection != buffer->priv->has_selection) { buffer->priv->has_selection = has_selection; g_object_notify (G_OBJECT (buffer), "has-selection"); } if (selection_changed) g_signal_emit (buffer, signals[SELECTION_CHANGED], 0); } static void moo_text_buffer_mark_set (GtkTextBuffer *text_buffer, const GtkTextIter *iter, GtkTextMark *mark) { GtkTextMark *insert = gtk_text_buffer_get_insert (text_buffer); GtkTextMark *sel_bound = gtk_text_buffer_get_selection_bound (text_buffer); MooTextBuffer *buffer = MOO_TEXT_BUFFER (text_buffer); if (GTK_TEXT_BUFFER_CLASS(moo_text_buffer_parent_class)->mark_set) GTK_TEXT_BUFFER_CLASS(moo_text_buffer_parent_class)->mark_set (text_buffer, iter, mark); if (mark == insert || mark == sel_bound) update_selection (buffer); if (mark == insert) cursor_moved (buffer, iter); } static void moo_text_buffer_insert_text (GtkTextBuffer *text_buffer, GtkTextIter *pos, const gchar *text, gint length) { MooTextBuffer *buffer = MOO_TEXT_BUFFER (text_buffer); GtkTextTag *tag; int first_line, last_line; gboolean starts_line, ins_line; if (!text[0]) return; first_line = gtk_text_iter_get_line (pos); starts_line = gtk_text_iter_starts_line (pos); ins_line = (text[0] == '\n' || text[0] == '\r'); if (!moo_undo_mgr_frozen (buffer->priv->undo_mgr)) { MooUndoAction *action; action = insert_action_new (text_buffer, pos, text, length); moo_undo_mgr_add_action (buffer->priv->undo_mgr, INSERT_ACTION_TYPE, action); } if (((tag = buffer->priv->correct_match_tag) && gtk_text_iter_has_tag (pos, tag)) || ((tag = buffer->priv->incorrect_match_tag) && gtk_text_iter_has_tag (pos, tag))) { if (!gtk_text_iter_begins_tag (pos, tag)) { GtkTextIter next = *pos; gtk_text_iter_forward_char (&next); gtk_text_buffer_remove_tag (text_buffer, tag, pos, &next); } } GTK_TEXT_BUFFER_CLASS(moo_text_buffer_parent_class)->insert_text (text_buffer, pos, text, length); last_line = gtk_text_iter_get_line (pos); if (last_line == first_line) moo_line_buffer_invalidate (buffer->priv->line_buf, first_line); else moo_line_buffer_split_line (buffer->priv->line_buf, first_line, last_line - first_line); moo_text_buffer_queue_highlight (buffer); cursor_moved (buffer, pos); if (!buffer->priv->has_text) { buffer->priv->has_text = TRUE; g_object_notify (G_OBJECT (buffer), "has-text"); } } static void moo_text_buffer_delete_range (GtkTextBuffer *text_buffer, GtkTextIter *start, GtkTextIter *end) { MooTextBuffer *buffer = MOO_TEXT_BUFFER (text_buffer); int first_line, last_line; gtk_text_iter_order (start, end); first_line = gtk_text_iter_get_line (start); last_line = gtk_text_iter_get_line (end); #define MANY_LINES 1000 if (buffer->priv->lang && buffer->priv->do_highlight && last_line - first_line > MANY_LINES) { gtk_text_buffer_remove_all_tags (text_buffer, start, end); } #undef MANY_LINES if (!moo_undo_mgr_frozen (buffer->priv->undo_mgr)) { MooUndoAction *action; action = delete_action_new (text_buffer, start, end); moo_undo_mgr_add_action (buffer->priv->undo_mgr, DELETE_ACTION_TYPE, action); } GTK_TEXT_BUFFER_CLASS(moo_text_buffer_parent_class)->delete_range (text_buffer, start, end); if (first_line < last_line) moo_line_buffer_delete_range (buffer->priv->line_buf, first_line + 1, last_line - first_line); moo_line_buffer_invalidate (buffer->priv->line_buf, first_line); moo_text_buffer_queue_highlight (buffer); update_selection (buffer); cursor_moved (buffer, start); if (buffer->priv->has_text) { buffer->priv->has_text = moo_text_buffer_has_text (buffer); if (!buffer->priv->has_text) g_object_notify (G_OBJECT (buffer), "has-text"); } } #if 0 static void before_undo_redo (MooTextBuffer *buffer) { GtkTextIter iter; gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (buffer), &iter, gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (buffer))); buffer->priv->cursor_was_at = gtk_text_iter_get_offset (&iter); } #endif static void after_undo_redo (MooTextBuffer *buffer) { GtkTextIter iter; int move_to = -1; if (buffer->priv->move_cursor_to >= 0) move_to = buffer->priv->move_cursor_to; #if 0 else move_to = buffer->priv->cursor_was_at; #endif if (move_to >= 0) { gtk_text_buffer_get_iter_at_offset (GTK_TEXT_BUFFER (buffer), &iter, move_to); gtk_text_buffer_place_cursor (GTK_TEXT_BUFFER (buffer), &iter); } buffer->priv->move_cursor_to = -1; #if 0 buffer->priv->cursor_was_at = -1; #endif } void moo_text_buffer_set_lang (MooTextBuffer *buffer, MooLang *lang) { MooLang *old_lang; g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); if (buffer->priv->lang == lang) return; old_lang = buffer->priv->lang; if (old_lang) moo_lang_unref (old_lang); moo_highlighter_destroy (buffer->priv->hl, TRUE); buffer->priv->lang = lang; if (lang) moo_lang_ref (lang); buffer->priv->hl = moo_highlighter_new (GTK_TEXT_BUFFER (buffer), buffer->priv->line_buf, lang); if (old_lang) moo_line_buffer_invalidate_all (buffer->priv->line_buf); moo_text_buffer_queue_highlight (buffer); moo_text_buffer_set_brackets (buffer, lang ? lang->brackets : NULL); } MooLang* moo_text_buffer_get_lang (MooTextBuffer *buffer) { g_return_val_if_fail (MOO_IS_TEXT_BUFFER (buffer), NULL); return buffer->priv->lang; } static void moo_text_buffer_queue_highlight (MooTextBuffer *buffer) { if (buffer->priv->lang && buffer->priv->do_highlight) moo_highlighter_queue_compute (buffer->priv->hl, TRUE); } void moo_text_buffer_set_highlight (MooTextBuffer *buffer, gboolean highlight) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); if ((highlight && buffer->priv->do_highlight) || (!highlight && !buffer->priv->do_highlight)) return; if (buffer->priv->do_highlight && buffer->priv->lang) moo_highlighter_destroy (buffer->priv->hl, TRUE); else moo_highlighter_destroy (buffer->priv->hl, FALSE); buffer->priv->do_highlight = highlight; if (!highlight || !buffer->priv->lang) { buffer->priv->hl = moo_highlighter_new (GTK_TEXT_BUFFER (buffer), buffer->priv->line_buf, NULL); } else { buffer->priv->hl = moo_highlighter_new (GTK_TEXT_BUFFER (buffer), buffer->priv->line_buf, buffer->priv->lang); moo_line_buffer_invalidate_all (buffer->priv->line_buf); moo_text_buffer_queue_highlight (buffer); } } gboolean moo_text_buffer_get_highlight (MooTextBuffer *buffer) { g_return_val_if_fail (MOO_IS_TEXT_BUFFER (buffer), FALSE); return buffer->priv->do_highlight ? TRUE : FALSE; } static void moo_text_buffer_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { MooTextBuffer *buffer = MOO_TEXT_BUFFER (object); switch (prop_id) { case PROP_CHECK_BRACKETS: moo_text_buffer_set_check_brackets (buffer, g_value_get_boolean (value)); break; case PROP_BRACKET_MATCH_STYLE: moo_text_buffer_set_bracket_match_style (buffer, g_value_get_boxed (value)); break; case PROP_BRACKET_MISMATCH_STYLE: moo_text_buffer_set_bracket_mismatch_style (buffer, g_value_get_boxed (value)); break; case PROP_LANG: moo_text_buffer_set_lang (buffer, g_value_get_boxed (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void moo_text_buffer_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { MooTextBuffer *buffer = MOO_TEXT_BUFFER (object); switch (prop_id) { case PROP_CHECK_BRACKETS: g_value_set_boolean (value, buffer->priv->check_brackets); break; case PROP_LANG: g_value_set_boxed (value, buffer->priv->lang); break; case PROP_HAS_TEXT: g_value_set_boolean (value, moo_text_buffer_has_text (buffer)); break; case PROP_HAS_SELECTION: g_value_set_boolean (value, buffer->priv->has_selection); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } gboolean moo_text_buffer_has_text (MooTextBuffer *buffer) { GtkTextIter start, end; g_return_val_if_fail (MOO_IS_TEXT_BUFFER (buffer), TRUE); gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (buffer), &start, &end); return gtk_text_iter_compare (&start, &end) ? TRUE : FALSE; } gboolean moo_text_buffer_has_selection (MooTextBuffer *buffer) { g_return_val_if_fail (MOO_IS_TEXT_BUFFER (buffer), FALSE); return gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (buffer), NULL, NULL); } void _moo_text_buffer_ensure_highlight (MooTextBuffer *buffer, int first_line, int last_line) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); moo_highlighter_apply_tags (buffer->priv->hl, first_line, last_line); } void _moo_text_buffer_highlighting_changed (MooTextBuffer *buffer, int first, int last) { GtkTextIter start, end; g_assert (MOO_IS_TEXT_BUFFER (buffer)); g_assert (first <= last && first >= 0); gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (buffer), &start, first); if (first == last) end = start; else gtk_text_buffer_get_iter_at_line (GTK_TEXT_BUFFER (buffer), &end, last); g_signal_emit (buffer, signals[HIGHLIGHTING_CHANGED], 0, &start, &end); } static void moo_text_buffer_apply_tag (GtkTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start, const GtkTextIter *end) { if (MOO_IS_SYNTAX_TAG (tag) && !MOO_TEXT_BUFFER(buffer)->priv->may_apply_tag) return; GTK_TEXT_BUFFER_CLASS(moo_text_buffer_parent_class)->apply_tag (buffer, tag, start, end); } void _moo_text_buffer_apply_syntax_tag (MooTextBuffer *buffer, GtkTextTag *tag, const GtkTextIter *start, const GtkTextIter *end) { GtkTextBuffer *text_buffer = GTK_TEXT_BUFFER (buffer); buffer->priv->may_apply_tag = TRUE; gtk_text_buffer_apply_tag (text_buffer, tag, start, end); buffer->priv->may_apply_tag = FALSE; } void moo_text_buffer_apply_scheme (MooTextBuffer *buffer, MooTextStyleScheme *scheme) { g_return_if_fail (scheme != NULL); g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); moo_text_buffer_set_bracket_match_style (buffer, scheme->bracket_match); moo_text_buffer_set_bracket_mismatch_style (buffer, scheme->bracket_mismatch); moo_highlighter_apply_scheme (buffer->priv->hl, scheme); } void moo_text_buffer_freeze (MooTextBuffer *buffer) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); freeze_cursor_moved (buffer); } void moo_text_buffer_thaw (MooTextBuffer *buffer) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); thaw_cursor_moved (buffer); } void moo_text_buffer_begin_interactive_action (MooTextBuffer *buffer) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); buffer->priv->interactive++; } void moo_text_buffer_end_interactive_action (MooTextBuffer *buffer) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); g_return_if_fail (buffer->priv->interactive > 0); buffer->priv->interactive--; } void moo_text_buffer_begin_non_interactive_action (MooTextBuffer *buffer) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); buffer->priv->non_interactive++; } void moo_text_buffer_end_non_interactive_action (MooTextBuffer *buffer) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); g_return_if_fail (buffer->priv->non_interactive > 0); buffer->priv->non_interactive--; } /*****************************************************************************/ /* Matching brackets */ #define FIND_BRACKETS_LIMIT 10000 static void cursor_moved (MooTextBuffer *buffer, const GtkTextIter *where) { if (!buffer->priv->cursor_moved_frozen) g_signal_emit (buffer, signals[CURSOR_MOVED], 0, where); else buffer->priv->cursor_moved = TRUE; } static void freeze_cursor_moved (MooTextBuffer *buffer) { buffer->priv->cursor_moved_frozen++; } static void thaw_cursor_moved (MooTextBuffer *buffer) { g_return_if_fail (buffer->priv->cursor_moved_frozen > 0); /* XXX it should check cursor after text is rehighlighted */ if (!--buffer->priv->cursor_moved_frozen && buffer->priv->cursor_moved) { GtkTextIter iter; GtkTextMark *insert = gtk_text_buffer_get_insert (GTK_TEXT_BUFFER (buffer)); gtk_text_buffer_get_iter_at_mark (GTK_TEXT_BUFFER (buffer), &iter, insert); cursor_moved (buffer, &iter); buffer->priv->cursor_moved = FALSE; } } static void moo_text_buffer_cursor_moved (MooTextBuffer *buffer, const GtkTextIter *where) { GtkTextIter iter[4]; MooBracketMatchType bracket_match; GtkTextTag *tag; GtkTextBuffer *text_buffer = GTK_TEXT_BUFFER (buffer); int i; g_return_if_fail (where != NULL); switch (buffer->priv->bracket_found) { case MOO_BRACKET_MATCH_CORRECT: tag = buffer->priv->correct_match_tag; break; case MOO_BRACKET_MATCH_INCORRECT: tag = buffer->priv->incorrect_match_tag; break; default: tag = NULL; } if (tag) { for (i = 0; i < 4; ++i) gtk_text_buffer_get_iter_at_mark (text_buffer, &iter[i], buffer->priv->bracket_mark[i]); gtk_text_buffer_remove_tag (text_buffer, tag, &iter[0], &iter[1]); gtk_text_buffer_remove_tag (text_buffer, tag, &iter[2], &iter[3]); } if (!buffer->priv->check_brackets) return; iter[0] = *where; buffer->priv->bracket_found = MOO_BRACKET_MATCH_NONE; if (!moo_text_iter_at_bracket (&iter[0])) return; iter[2] = iter[0]; bracket_match = moo_text_iter_find_matching_bracket (&iter[2], FIND_BRACKETS_LIMIT); buffer->priv->bracket_found = bracket_match; switch (bracket_match) { case MOO_BRACKET_MATCH_CORRECT: tag = buffer->priv->correct_match_tag; break; case MOO_BRACKET_MATCH_INCORRECT: tag = buffer->priv->incorrect_match_tag; break; default: tag = NULL; } if (tag != NULL) { iter[1] = iter[0]; gtk_text_iter_forward_char (&iter[1]); iter[3] = iter[2]; gtk_text_iter_forward_char (&iter[3]); if (!buffer->priv->bracket_mark[0]) for (i = 0; i < 4; ++i) buffer->priv->bracket_mark[i] = gtk_text_buffer_create_mark (text_buffer, NULL, &iter[i], FALSE); else for (i = 0; i < 4; ++i) gtk_text_buffer_move_mark (text_buffer, buffer->priv->bracket_mark[i], &iter[i]); gtk_text_buffer_apply_tag (text_buffer, tag, &iter[0], &iter[1]); gtk_text_buffer_apply_tag (text_buffer, tag, &iter[2], &iter[3]); } } void moo_text_buffer_set_bracket_match_style (MooTextBuffer *buffer, const MooTextStyle *style) { static MooTextStyle empty; g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); if (!style) style = ∅ if (!buffer->priv->correct_match_tag) buffer->priv->correct_match_tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer), NULL, NULL); _moo_style_set_tag_style (style, buffer->priv->correct_match_tag); g_object_notify (G_OBJECT (buffer), "bracket-match-style"); } void moo_text_buffer_set_bracket_mismatch_style (MooTextBuffer *buffer, const MooTextStyle *style) { static MooTextStyle empty; g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); if (!style) style = ∅ if (!buffer->priv->incorrect_match_tag) buffer->priv->incorrect_match_tag = gtk_text_buffer_create_tag (GTK_TEXT_BUFFER (buffer), NULL, NULL); _moo_style_set_tag_style (style, buffer->priv->incorrect_match_tag); g_object_notify (G_OBJECT (buffer), "bracket-mismatch-style"); } static gboolean parse_brackets (const char *string, gunichar **left_brackets, gunichar **right_brackets, guint *num) { long len, i; const char *p; gunichar *left, *right; g_return_val_if_fail (g_utf8_validate (string, -1, NULL), FALSE); len = g_utf8_strlen (string, -1); g_return_val_if_fail (len > 0 && (len / 2) * 2 == len, FALSE); len /= 2; p = string; left = g_new (gunichar, len); right = g_new (gunichar, len); for (i = 0; i < len; ++i) { left[i] = g_utf8_get_char (p); p = g_utf8_next_char (p); right[i] = g_utf8_get_char (p); p = g_utf8_next_char (p); } *left_brackets = left; *right_brackets = right; *num = len; return TRUE; } void moo_text_buffer_set_brackets (MooTextBuffer *buffer, const gchar *string) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); buffer->priv->num_brackets = 0; g_free (buffer->priv->left_brackets); buffer->priv->left_brackets = NULL; g_free (buffer->priv->right_brackets); buffer->priv->right_brackets = NULL; if (!string) { buffer->priv->num_brackets = 3; buffer->priv->left_brackets = g_new (gunichar, 3); buffer->priv->right_brackets = g_new (gunichar, 3); buffer->priv->left_brackets[0] = '('; buffer->priv->left_brackets[1] = '{'; buffer->priv->left_brackets[2] = '['; buffer->priv->right_brackets[0] = ')'; buffer->priv->right_brackets[1] = '}'; buffer->priv->right_brackets[2] = ']'; return; } else if (!string[0]) { return; } parse_brackets (string, &(buffer->priv->left_brackets), &(buffer->priv->right_brackets), &(buffer->priv->num_brackets)); } void moo_text_buffer_set_check_brackets (MooTextBuffer *buffer, gboolean check) { g_return_if_fail (MOO_IS_TEXT_BUFFER (buffer)); buffer->priv->check_brackets = check ? TRUE : FALSE; g_object_notify (G_OBJECT (buffer), "check-brackets"); } inline static gboolean find (gunichar *vec, guint size, gunichar c) { guint i; for (i = 0; i < size; ++i) if (c == vec[i]) return TRUE; return FALSE; } gboolean moo_text_iter_at_bracket (GtkTextIter *iter) { gunichar c; GtkTextIter b; MooTextBuffer *buffer; buffer = MOO_TEXT_BUFFER (gtk_text_iter_get_buffer (iter)); g_return_val_if_fail (MOO_IS_TEXT_BUFFER (buffer), FALSE); c = gtk_text_iter_get_char (iter); if (find (buffer->priv->left_brackets, buffer->priv->num_brackets, c) || find (buffer->priv->right_brackets, buffer->priv->num_brackets, c)) { return TRUE; } b = *iter; if (!gtk_text_iter_starts_line (&b) && gtk_text_iter_backward_char (&b)) { c = gtk_text_iter_get_char (&b); if (find (buffer->priv->left_brackets, buffer->priv->num_brackets, c) || find (buffer->priv->right_brackets, buffer->priv->num_brackets, c)) { *iter = b; return TRUE; } } return FALSE; } MooBracketMatchType moo_text_iter_find_matching_bracket (GtkTextIter *iter, int limit) { int addition = 0; int count; gunichar *same_direction = NULL, *inverse_direction = NULL; guint to_find; gunichar bracket = gtk_text_iter_get_char (iter); gunichar bracket_to_find = 0; MooContext *ctx; guint stack = 0; GtkTextIter b; MooTextBuffer *buffer; buffer = MOO_TEXT_BUFFER (gtk_text_iter_get_buffer (iter)); g_return_val_if_fail (MOO_IS_TEXT_BUFFER (buffer), MOO_BRACKET_MATCH_NOT_AT_BRACKET); for (to_find = 0; to_find < buffer->priv->num_brackets; ++to_find) { if (bracket == buffer->priv->left_brackets[to_find]) { bracket_to_find = buffer->priv->right_brackets[to_find]; addition = 1; inverse_direction = buffer->priv->right_brackets; same_direction = buffer->priv->left_brackets; break; } } if (to_find == buffer->priv->num_brackets) { for (to_find = 0; to_find < buffer->priv->num_brackets; ++to_find) { if (bracket == buffer->priv->right_brackets[to_find]) { bracket_to_find = buffer->priv->left_brackets[to_find]; addition = -1; same_direction = buffer->priv->right_brackets; inverse_direction = buffer->priv->left_brackets; break; } } } if (to_find == buffer->priv->num_brackets) return MOO_BRACKET_MATCH_NOT_AT_BRACKET; ctx = _moo_text_iter_get_context (iter); stack = 0; b = *iter; if (limit < 0) limit = G_MAXINT; count = 0; while (gtk_text_iter_forward_chars (&b, addition) && count++ < limit) { if (ctx == _moo_text_iter_get_context (&b)) { gunichar c = gtk_text_iter_get_char (&b); if (c == bracket_to_find && !stack) { *iter = b; return MOO_BRACKET_MATCH_CORRECT; } if (find (same_direction, buffer->priv->num_brackets, c)) { ++stack; } else if (find (inverse_direction, buffer->priv->num_brackets, c)) { if (stack) { --stack; } else { *iter = b; return MOO_BRACKET_MATCH_INCORRECT; } } } } return MOO_BRACKET_MATCH_NONE; } /*****************************************************************************/ /* Undo/redo */ typedef enum { ACTION_INSERT, ACTION_DELETE } ActionType; typedef struct { char *text; guint interactive : 1; guint mergeable : 1; } EditAction; typedef struct { EditAction edit; int pos; int length; int chars; } InsertAction; typedef struct { EditAction edit; int start; int end; guint forward : 1; } DeleteAction; #define EDIT_ACTION(action__) ((EditAction*)action__) #define ACTION_INTERACTIVE(action__) (((EditAction*)action__)->interactive) static void edit_action_destroy (EditAction *action, MooTextBuffer *buffer); static void insert_action_undo (InsertAction *action, GtkTextBuffer *buffer); static void insert_action_redo (InsertAction *action, GtkTextBuffer *buffer); static gboolean insert_action_merge (InsertAction *action, InsertAction *what, MooTextBuffer *buffer); static void delete_action_undo (DeleteAction *action, GtkTextBuffer *buffer); static void delete_action_redo (DeleteAction *action, GtkTextBuffer *buffer); static gboolean delete_action_merge (DeleteAction *action, DeleteAction *what, MooTextBuffer *buffer); static MooUndoActionClass InsertActionClass = { (MooUndoActionUndo) insert_action_undo, (MooUndoActionRedo) insert_action_redo, (MooUndoActionMerge) insert_action_merge, (MooUndoActionDestroy) edit_action_destroy }; static MooUndoActionClass DeleteActionClass = { (MooUndoActionUndo) delete_action_undo, (MooUndoActionRedo) delete_action_redo, (MooUndoActionMerge) delete_action_merge, (MooUndoActionDestroy) edit_action_destroy }; static void init_undo_actions (void) { INSERT_ACTION_TYPE = moo_undo_action_register (&InsertActionClass); DELETE_ACTION_TYPE = moo_undo_action_register (&DeleteActionClass); } static EditAction * action_new (ActionType type, MooTextBuffer *buffer) { EditAction *action; gsize size = 0; MooUndoActionClass *klass = NULL; GtkTextBuffer *text_buffer = GTK_TEXT_BUFFER (buffer); switch (type) { case ACTION_INSERT: size = sizeof (InsertAction); klass = &InsertActionClass; break; case ACTION_DELETE: size = sizeof (DeleteAction); klass = &DeleteActionClass; break; } action = g_malloc0 (size); action->interactive = !buffer->priv->non_interactive && buffer->priv->interactive ? TRUE : FALSE; if (!gtk_text_buffer_get_modified (text_buffer)) buffer->priv->modifying_action = action; return action; } static MooUndoAction * insert_action_new (GtkTextBuffer *buffer, GtkTextIter *pos, const char *text, int length) { InsertAction *action; EditAction *edit_action; if (length < 0) length = strlen (text); g_return_val_if_fail (length > 0, NULL); edit_action = action_new (ACTION_INSERT, MOO_TEXT_BUFFER (buffer)); action = (InsertAction*) edit_action; action->pos = gtk_text_iter_get_offset (pos); action->edit.text = g_strndup (text, length); action->length = length; action->chars = g_utf8_strlen (text, length); if (action->chars > 1 || text[0] == '\n') edit_action->mergeable = FALSE; else edit_action->mergeable = TRUE; return (MooUndoAction*) action; } static MooUndoAction * delete_action_new (GtkTextBuffer *buffer, GtkTextIter *start, GtkTextIter *end) { GtkTextIter iter; DeleteAction *action; EditAction *edit_action; int start_offset, end_offset; start_offset = gtk_text_iter_get_offset (start); end_offset = gtk_text_iter_get_offset (end); g_return_val_if_fail (start_offset < end_offset, NULL); edit_action = action_new (ACTION_DELETE, MOO_TEXT_BUFFER (buffer)); action = (DeleteAction*) edit_action; action->start = start_offset; action->end = end_offset; action->edit.text = gtk_text_buffer_get_slice (buffer, start, end, TRUE); if (edit_action->interactive) { /* figure out if the user used the Delete or the Backspace key */ gtk_text_buffer_get_iter_at_mark (buffer, &iter, gtk_text_buffer_get_insert (buffer)); if (gtk_text_iter_get_offset (&iter) <= action->start) action->forward = TRUE; else action->forward = FALSE; } if (action->end - action->start > 1 || action->edit.text[0] == '\n') edit_action->mergeable = FALSE; else edit_action->mergeable = TRUE; return (MooUndoAction*) action; } static void action_undo_or_redo (EditAction *action, GtkTextBuffer *text_buffer, gboolean was_modified) { MooTextBuffer *buffer = MOO_TEXT_BUFFER (text_buffer); if (!was_modified) { g_return_if_fail (gtk_text_buffer_get_modified (text_buffer)); g_return_if_fail (buffer->priv->modifying_action == NULL); buffer->priv->modifying_action = action; } else if (buffer->priv->modifying_action == action) { gtk_text_buffer_set_modified (text_buffer, FALSE); buffer->priv->modifying_action = NULL; } } static void insert_action_undo (InsertAction *action, GtkTextBuffer *buffer) { GtkTextIter start, end; gboolean was_modified; was_modified = gtk_text_buffer_get_modified (buffer); gtk_text_buffer_get_iter_at_offset (buffer, &start, action->pos); gtk_text_buffer_get_iter_at_offset (buffer, &end, action->pos + action->chars); gtk_text_buffer_delete (buffer, &start, &end); if (ACTION_INTERACTIVE (action)) MOO_TEXT_BUFFER(buffer)->priv->move_cursor_to = action->pos; action_undo_or_redo (EDIT_ACTION (action), buffer, was_modified); } static void delete_action_undo (DeleteAction *action, GtkTextBuffer *buffer) { GtkTextIter start; gboolean was_modified; was_modified = gtk_text_buffer_get_modified (buffer); gtk_text_buffer_get_iter_at_offset (buffer, &start, action->start); gtk_text_buffer_insert (buffer, &start, action->edit.text, -1); if (ACTION_INTERACTIVE (action)) { if (action->forward) MOO_TEXT_BUFFER(buffer)->priv->move_cursor_to = action->start; else MOO_TEXT_BUFFER(buffer)->priv->move_cursor_to = action->end; } action_undo_or_redo (EDIT_ACTION (action), buffer, was_modified); } static void insert_action_redo (InsertAction *action, GtkTextBuffer *buffer) { GtkTextIter start; gboolean was_modified; was_modified = gtk_text_buffer_get_modified (buffer); gtk_text_buffer_get_iter_at_offset (buffer, &start, action->pos); gtk_text_buffer_insert (buffer, &start, action->edit.text, action->length); if (ACTION_INTERACTIVE (action)) MOO_TEXT_BUFFER(buffer)->priv->move_cursor_to = action->pos + action->length; action_undo_or_redo (EDIT_ACTION (action), buffer, was_modified); } static void delete_action_redo (DeleteAction *action, GtkTextBuffer *buffer) { GtkTextIter start, end; gboolean was_modified; was_modified = gtk_text_buffer_get_modified (buffer); gtk_text_buffer_get_iter_at_offset (buffer, &start, action->start); gtk_text_buffer_get_iter_at_offset (buffer, &end, action->end); gtk_text_buffer_delete (buffer, &start, &end); if (ACTION_INTERACTIVE (action)) MOO_TEXT_BUFFER(buffer)->priv->move_cursor_to = action->start; action_undo_or_redo (EDIT_ACTION (action), buffer, was_modified); } static void edit_action_destroy (EditAction *action, MooTextBuffer *buffer) { if (action) { if (buffer->priv->modifying_action == action) buffer->priv->modifying_action = NULL; g_free (action->text); g_free (action); } } static gboolean action_merge (EditAction *last_action, EditAction *action, MooTextBuffer *buffer) { if (!last_action->mergeable) return FALSE; if (!action->mergeable || buffer->priv->modifying_action == action || action->interactive != last_action->interactive) { last_action->mergeable = FALSE; return FALSE; } return TRUE; } static gboolean insert_action_merge (InsertAction *last_action, InsertAction *action, MooTextBuffer *buffer) { char *tmp; if (!action_merge (EDIT_ACTION (last_action), EDIT_ACTION (action), buffer)) return FALSE; if (action->pos != (last_action->pos + last_action->chars) || (action->edit.text[0] != ' ' && action->edit.text[0] != '\t' && (last_action->edit.text[last_action->length-1] == ' ' || last_action->edit.text[last_action->length-1] == '\t'))) { EDIT_ACTION(last_action)->mergeable = FALSE; return FALSE; } tmp = g_strconcat (last_action->edit.text, action->edit.text, NULL); g_free (last_action->edit.text); last_action->length += action->length; last_action->edit.text = tmp; last_action->chars += action->chars; return TRUE; } static gboolean delete_action_merge (DeleteAction *last_action, DeleteAction *action, MooTextBuffer *buffer) { char *tmp; if (!action_merge (EDIT_ACTION (last_action), EDIT_ACTION (action), buffer)) return FALSE; if (last_action->forward != action->forward || (last_action->start != action->start && last_action->start != action->end)) { EDIT_ACTION(last_action)->mergeable = FALSE; return FALSE; } if (last_action->start == action->start) { char *text_end = g_utf8_offset_to_pointer (last_action->edit.text, last_action->end - last_action->start - 1); /* Deleted with the delete key */ if (action->edit.text[0] != ' ' && action->edit.text[0] != '\t' && (*text_end == ' ' || *text_end == '\t')) { EDIT_ACTION(last_action)->mergeable = FALSE; return FALSE; } tmp = g_strconcat (last_action->edit.text, action->edit.text, NULL); g_free (last_action->edit.text); last_action->end += (action->end - action->start); last_action->edit.text = tmp; } else { /* Deleted with the backspace key */ if (action->edit.text[0] != ' ' && action->edit.text[0] != '\t' && (last_action->edit.text[0] == ' ' || last_action->edit.text[0] == '\t')) { EDIT_ACTION(last_action)->mergeable = FALSE; return FALSE; } tmp = g_strconcat (action->edit.text, last_action->edit.text, NULL); g_free (last_action->edit.text); last_action->start = action->start; last_action->edit.text = tmp; } return TRUE; }