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xed/xed/xed-highlight-mode-selector.c

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/*
* xed-highlight-mode-selector.c
* This file is part of xed
*
* Copyright (C) 2013 - Ignacio Casal Quinteiro
*
* xed 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.
*
* xed is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with xed. If not, see <http://www.gnu.org/licenses/>.
*/
#include "xed-highlight-mode-selector.h"
#include <gdk/gdkkeysyms.h>
#include <glib/gi18n.h>
#include <string.h>
enum
{
COLUMN_NAME,
COLUMN_LANG,
N_COLUMNS
};
struct _XedHighlightModeSelector
{
GtkGrid parent_instance;
GtkWidget *treeview;
GtkWidget *entry;
GtkListStore *liststore;
GtkTreeModelFilter *treemodelfilter;
GtkTreeSelection *treeview_selection;
};
/* Signals */
enum
{
LANGUAGE_SELECTED,
CANCELLED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (XedHighlightModeSelector, xed_highlight_mode_selector, GTK_TYPE_GRID)
static void
xed_highlight_mode_selector_language_selected (XedHighlightModeSelector *widget,
GtkSourceLanguage *language)
{
}
static void
xed_highlight_mode_selector_class_init (XedHighlightModeSelectorClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
signals[LANGUAGE_SELECTED] =
g_signal_new_class_handler ("language-selected",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (xed_highlight_mode_selector_language_selected),
NULL, NULL, NULL,
G_TYPE_NONE,
1,
GTK_SOURCE_TYPE_LANGUAGE);
signals[CANCELLED] =
g_signal_new_class_handler ("cancelled",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
NULL, NULL, NULL, NULL,
G_TYPE_NONE, 0);
/* Bind class to template */
gtk_widget_class_set_template_from_resource (widget_class,
"/org/x/editor/ui/xed-highlight-mode-selector.ui");
gtk_widget_class_bind_template_child (widget_class, XedHighlightModeSelector, treeview);
gtk_widget_class_bind_template_child (widget_class, XedHighlightModeSelector, entry);
gtk_widget_class_bind_template_child (widget_class, XedHighlightModeSelector, liststore);
gtk_widget_class_bind_template_child (widget_class, XedHighlightModeSelector, treemodelfilter);
gtk_widget_class_bind_template_child (widget_class, XedHighlightModeSelector, treeview_selection);
}
static gboolean
visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
XedHighlightModeSelector *selector)
{
const gchar *entry_text;
gchar *name;
gchar *name_normalized;
gchar *name_casefolded;
gchar *text_normalized;
gchar *text_casefolded;
gboolean visible = FALSE;
entry_text = gtk_entry_get_text (GTK_ENTRY (selector->entry));
if (*entry_text == '\0')
{
return TRUE;
}
gtk_tree_model_get (model, iter, COLUMN_NAME, &name, -1);
name_normalized = g_utf8_normalize (name, -1, G_NORMALIZE_ALL);
g_free (name);
name_casefolded = g_utf8_casefold (name_normalized, -1);
g_free (name_normalized);
text_normalized = g_utf8_normalize (entry_text, -1, G_NORMALIZE_ALL);
text_casefolded = g_utf8_casefold (text_normalized, -1);
g_free (text_normalized);
if (strstr (name_casefolded, text_casefolded) != NULL)
{
visible = TRUE;
}
g_free (name_casefolded);
g_free (text_casefolded);
return visible;
}
static void
on_entry_activate (GtkEntry *entry,
XedHighlightModeSelector *selector)
{
xed_highlight_mode_selector_activate_selected_language (selector);
}
static void
on_entry_changed (GtkEntry *entry,
XedHighlightModeSelector *selector)
{
GtkTreeIter iter;
gtk_tree_model_filter_refilter (selector->treemodelfilter);
if (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (selector->treemodelfilter), &iter))
{
gtk_tree_selection_select_iter (selector->treeview_selection, &iter);
}
}
static gboolean
move_selection (XedHighlightModeSelector *selector,
gint howmany)
{
GtkTreeIter iter;
GtkTreePath *path;
gint *indices;
gint ret = FALSE;
if (!gtk_tree_selection_get_selected (selector->treeview_selection, NULL, &iter) &&
!gtk_tree_model_get_iter_first (GTK_TREE_MODEL (selector->treemodelfilter), &iter))
{
return FALSE;
}
path = gtk_tree_model_get_path (GTK_TREE_MODEL (selector->treemodelfilter), &iter);
indices = gtk_tree_path_get_indices (path);
if (indices)
{
gint num;
gint idx;
GtkTreePath *new_path;
idx = indices[0];
num = gtk_tree_model_iter_n_children (GTK_TREE_MODEL (selector->treemodelfilter), NULL);
if ((idx + howmany) < 0)
{
idx = 0;
}
else if ((idx + howmany) >= num)
{
idx = num - 1;
}
else
{
idx = idx + howmany;
}
new_path = gtk_tree_path_new_from_indices (idx, -1);
gtk_tree_selection_select_path (selector->treeview_selection, new_path);
gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (selector->treeview),
new_path, NULL, TRUE, 0.5, 0);
gtk_tree_path_free (new_path);
ret = TRUE;
}
gtk_tree_path_free (path);
return ret;
}
static gboolean
on_entry_key_press_event (GtkWidget *entry,
GdkEventKey *event,
XedHighlightModeSelector *selector)
{
if (event->keyval == GDK_KEY_Down)
{
return move_selection (selector, 1);
}
else if (event->keyval == GDK_KEY_Up)
{
return move_selection (selector, -1);
}
else if (event->keyval == GDK_KEY_Page_Down)
{
return move_selection (selector, 5);
}
else if (event->keyval == GDK_KEY_Page_Up)
{
return move_selection (selector, -5);
}
else if (event->keyval == GDK_KEY_Escape)
{
g_signal_emit (G_OBJECT (selector), signals[CANCELLED], 0);
return FALSE;
}
return FALSE;
}
static void
on_entry_realized (GtkWidget *entry,
XedHighlightModeSelector *selector)
{
gtk_widget_grab_focus (entry);
}
static void
on_row_activated (GtkTreeView *tree_view,
GtkTreePath *path,
GtkTreeViewColumn *column,
XedHighlightModeSelector *selector)
{
xed_highlight_mode_selector_activate_selected_language (selector);
}
static void
xed_highlight_mode_selector_init (XedHighlightModeSelector *selector)
{
GtkSourceLanguageManager *lm;
const gchar * const *ids;
gint i;
GtkTreeIter iter;
selector = xed_highlight_mode_selector_get_instance_private (selector);
gtk_widget_init_template (GTK_WIDGET (selector));
gtk_tree_model_filter_set_visible_func (selector->treemodelfilter,
(GtkTreeModelFilterVisibleFunc)visible_func,
selector,
NULL);
g_signal_connect (selector->entry, "activate",
G_CALLBACK (on_entry_activate), selector);
g_signal_connect (selector->entry, "changed",
G_CALLBACK (on_entry_changed), selector);
g_signal_connect (selector->entry, "key-press-event",
G_CALLBACK (on_entry_key_press_event), selector);
g_signal_connect (selector->entry, "realize",
G_CALLBACK (on_entry_realized), selector);
g_signal_connect (selector->treeview, "row-activated",
G_CALLBACK (on_row_activated), selector);
/* Populate tree model */
gtk_list_store_append (selector->liststore, &iter);
gtk_list_store_set (selector->liststore, &iter,
COLUMN_NAME, _("Plain Text"),
COLUMN_LANG, NULL,
-1);
lm = gtk_source_language_manager_get_default ();
ids = gtk_source_language_manager_get_language_ids (lm);
for (i = 0; ids[i] != NULL; i++)
{
GtkSourceLanguage *lang;
lang = gtk_source_language_manager_get_language (lm, ids[i]);
if (!gtk_source_language_get_hidden (lang))
{
gtk_list_store_append (selector->liststore, &iter);
gtk_list_store_set (selector->liststore, &iter,
COLUMN_NAME, gtk_source_language_get_name (lang),
COLUMN_LANG, lang,
-1);
}
}
/* select first item */
if (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (selector->treemodelfilter), &iter))
{
gtk_tree_selection_select_iter (selector->treeview_selection, &iter);
}
}
XedHighlightModeSelector *
xed_highlight_mode_selector_new ()
{
return g_object_new (XED_TYPE_HIGHLIGHT_MODE_SELECTOR, NULL);
}
void
xed_highlight_mode_selector_select_language (XedHighlightModeSelector *selector,
GtkSourceLanguage *language)
{
GtkTreeIter iter;
g_return_if_fail (XED_IS_HIGHLIGHT_MODE_SELECTOR (selector));
if (language == NULL)
{
return;
}
if (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (selector->treemodelfilter), &iter))
{
do
{
GtkSourceLanguage *lang;
gtk_tree_model_get (GTK_TREE_MODEL (selector->treemodelfilter),
&iter,
COLUMN_LANG, &lang,
-1);
if (lang != NULL)
{
gboolean equal = (lang == language);
g_object_unref (lang);
if (equal)
{
GtkTreePath *path;
path = gtk_tree_model_get_path (GTK_TREE_MODEL (selector->treemodelfilter), &iter);
gtk_tree_selection_select_iter (selector->treeview_selection, &iter);
gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (selector->treeview),
path, NULL, TRUE, 0.5, 0);
gtk_tree_path_free (path);
break;
}
}
}
while (gtk_tree_model_iter_next (GTK_TREE_MODEL (selector->treemodelfilter), &iter));
}
}
void
xed_highlight_mode_selector_activate_selected_language (XedHighlightModeSelector *selector)
{
GtkSourceLanguage *lang;
GtkTreeIter iter;
g_return_if_fail (XED_IS_HIGHLIGHT_MODE_SELECTOR (selector));
if (!gtk_tree_selection_get_selected (selector->treeview_selection, NULL, &iter))
{
return;
}
gtk_tree_model_get (GTK_TREE_MODEL (selector->treemodelfilter), &iter,
COLUMN_LANG, &lang,
-1);
g_signal_emit (G_OBJECT (selector), signals[LANGUAGE_SELECTED], 0, lang);
if (lang != NULL)
{
g_object_unref (lang);
}
}
/* ex:set ts=8 noet: */
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