Moved from Mate-Extra repository

author: Stefano Karapetsas <[email protected]> 2011-12-14 10:13:54 +0100
committer: Stefano Karapetsas <[email protected]> 2011-12-14 10:13:54 +0100
commit: ef0467789bfc8406b57ba553e4d59f4d6c3f9be8 (patch)
tree: 09d541636a16cb38448fe6183289ebdc3080c1bf /mate-dictionary/libgdict/gdict-strategy-chooser.c
download: mate-utils-ef0467789bfc8406b57ba553e4d59f4d6c3f9be8.tar.bz2
mate-utils-ef0467789bfc8406b57ba553e4d59f4d6c3f9be8.tar.xz
1 files changed, 1092 insertions, 0 deletions
diff --git a/mate-dictionary/libgdict/gdict-strategy-chooser.c b/mate-dictionary/libgdict/gdict-strategy-chooser.c
new file mode 100644
index 00000000..93df7073
--- /dev/null
+++ b/mate-dictionary/libgdict/gdict-strategy-chooser.c
@@ -0,0 +1,1092 @@
+/* gdict-strategy-chooser.c - display widget for strategy names
+ *
+ * Copyright (C) 2006 Emmanuele Bassi <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ */
+
+/**
+ * SECTION:gdict-strategy-chooser
+ * @short_description: Display a list of matching strategies
+ *
+ * Each #GdictContext allows matching a word using a specific "matching
+ * strategy". The #GdictStrategyChooser widget queries a #GdictContext and
+ * displays the list of available matching strategies.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include <gtk/gtk.h>
+#include <glib/gi18n-lib.h>
+
+#include "gdict-strategy-chooser.h"
+#include "gdict-utils.h"
+#include "gdict-debug.h"
+#include "gdict-private.h"
+#include "gdict-enum-types.h"
+#include "gdict-marshal.h"
+
+#define GDICT_STRATEGY_CHOOSER_GET_PRIVATE(obj) \
+(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GDICT_TYPE_STRATEGY_CHOOSER, GdictStrategyChooserPrivate))
+
+struct _GdictStrategyChooserPrivate
+{
+ GtkListStore *store;
+
+ GtkWidget *treeview;
+ GtkWidget *clear_button;
+ GtkWidget *refresh_button;
+ GtkWidget *buttons_box;
+ 
+ GdictContext *context;
+ gint results;
+
+ guint start_id;
+ guint match_id;
+ guint end_id;
+ guint error_id;
+
+ GdkCursor *busy_cursor;
+
+ gchar *current_strat;
+
+ guint is_searching : 1;
+};
+
+enum
+{
+ STRATEGY_NAME,
+ STRATEGY_ERROR
+} StratType;
+
+enum
+{
+ STRAT_COLUMN_TYPE,
+ STRAT_COLUMN_NAME,
+ STRAT_COLUMN_DESCRIPTION,
+ STRAT_COLUMN_CURRENT,
+
+ STRAT_N_COLUMNS
+};
+
+enum
+{
+ PROP_0,
+ 
+ PROP_CONTEXT,
+ PROP_COUNT
+};
+
+enum
+{
+ STRATEGY_ACTIVATED,
+ CLOSED,
+
+ LAST_SIGNAL
+};
+
+static guint db_chooser_signals[LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (GdictStrategyChooser,
+ gdict_strategy_chooser,
+ GTK_TYPE_VBOX);
+
+
+static void
+set_gdict_context (GdictStrategyChooser *chooser,
+ GdictContext *context)
+{
+ GdictStrategyChooserPrivate *priv;
+ 
+ g_assert (GDICT_IS_STRATEGY_CHOOSER (chooser));
+ priv = chooser->priv;
+ 
+ if (priv->context)
+ {
+ if (priv->start_id)
+ {
+ GDICT_NOTE (CHOOSER, "Removing old context handlers");
+ 
+ g_signal_handler_disconnect (priv->context, priv->start_id);
+ g_signal_handler_disconnect (priv->context, priv->match_id);
+ g_signal_handler_disconnect (priv->context, priv->end_id);
+ 
+ priv->start_id = 0;
+ priv->end_id = 0;
+ priv->match_id = 0;
+ }
+ 
+ if (priv->error_id)
+ {
+ g_signal_handler_disconnect (priv->context, priv->error_id);
+
+ priv->error_id = 0;
+ }
+
+ GDICT_NOTE (CHOOSER, "Removing old context");
+ 
+ g_object_unref (G_OBJECT (priv->context));
+ 
+ priv->context = NULL;
+ priv->results = -1;
+ }
+
+ if (!context)
+ return;
+
+ if (!GDICT_IS_CONTEXT (context))
+ {
+ g_warning ("Object of type '%s' instead of a GdictContext\n",
+ g_type_name (G_OBJECT_TYPE (context)));
+ return;
+ }
+
+ GDICT_NOTE (CHOOSER, "Setting new context");
+ 
+ priv->context = g_object_ref (context);
+ priv->results = 0;
+}
+
+static void
+gdict_strategy_chooser_dispose (GObject *gobject)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (gobject);
+ GdictStrategyChooserPrivate *priv = chooser->priv;
+
+ set_gdict_context (chooser, NULL);
+
+ if (priv->busy_cursor)
+ {
+ gdk_cursor_unref (priv->busy_cursor);
+ priv->busy_cursor = NULL;
+ }
+
+ if (priv->store)
+ {
+ g_object_unref (priv->store);
+ priv->store = NULL;
+ }
+
+ G_OBJECT_CLASS (gdict_strategy_chooser_parent_class)->dispose (gobject);
+}
+
+static void
+gdict_strategy_chooser_finalize (GObject *gobject)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (gobject);
+ GdictStrategyChooserPrivate *priv = chooser->priv;
+
+ g_free (priv->current_strat);
+
+ G_OBJECT_CLASS (gdict_strategy_chooser_parent_class)->finalize (gobject);
+}
+
+static void
+gdict_strategy_chooser_set_property (GObject *gobject,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (gobject);
+ 
+ switch (prop_id)
+ {
+ case PROP_CONTEXT:
+ set_gdict_context (chooser, g_value_get_object (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gdict_strategy_chooser_get_property (GObject *gobject,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (gobject);
+ 
+ switch (prop_id)
+ {
+ case PROP_CONTEXT:
+ g_value_set_object (value, chooser->priv->context);
+ break;
+ case PROP_COUNT:
+ g_value_set_int (value, chooser->priv->results);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+row_activated_cb (GtkTreeView *treeview,
+ GtkTreePath *path,
+ GtkTreeViewColumn *column,
+ gpointer user_data)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (user_data);
+ GdictStrategyChooserPrivate *priv = chooser->priv;
+ GtkTreeIter iter;
+ gchar *db_name, *db_desc;
+ gboolean valid;
+
+ valid = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->store),
+ &iter,
+ path);
+ if (!valid)
+ {
+ g_warning ("Invalid iterator found");
+ return;
+ }
+
+ gtk_tree_model_get (GTK_TREE_MODEL (priv->store), &iter,
+ STRAT_COLUMN_NAME, &db_name,
+ STRAT_COLUMN_DESCRIPTION, &db_desc,
+ -1);
+ if (db_name && db_desc)
+ {
+ g_signal_emit (chooser, db_chooser_signals[STRATEGY_ACTIVATED], 0,
+ db_name, db_desc);
+ }
+ else
+ {
+ gchar *row = gtk_tree_path_to_string (path);
+
+ g_warning ("Row %s activated, but no strategy attached", row);
+ g_free (row);
+ }
+
+ g_free (db_name);
+ g_free (db_desc);
+}
+
+static void
+refresh_button_clicked_cb (GtkWidget *widget,
+ gpointer user_data)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (user_data);
+
+ gdict_strategy_chooser_refresh (chooser);
+}
+
+static void
+clear_button_clicked_cb (GtkWidget *widget,
+ gpointer user_data)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (user_data);
+
+ gdict_strategy_chooser_clear (chooser);
+}
+
+static GObject *
+gdict_strategy_chooser_constructor (GType type,
+ guint n_params,
+ GObjectConstructParam *params)
+{
+ GObject *object;
+ GdictStrategyChooser *chooser;
+ GdictStrategyChooserPrivate *priv;
+ GtkWidget *sw;
+ GtkCellRenderer *renderer;
+ GtkTreeViewColumn *column;
+ GtkWidget *hbox;
+
+ object = G_OBJECT_CLASS (gdict_strategy_chooser_parent_class)->constructor (type,
+ n_params,
+ params);
+
+ chooser = GDICT_STRATEGY_CHOOSER (object);
+ priv = chooser->priv;
+
+ gtk_widget_push_composite_child ();
+
+ sw = gtk_scrolled_window_new (NULL, NULL);
+ gtk_widget_set_composite_name (sw, "gdict-strategy-chooser-scrolled-window");
+ gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
+ GTK_POLICY_AUTOMATIC,
+ GTK_POLICY_AUTOMATIC);
+ gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw),
+ GTK_SHADOW_IN);
+ gtk_box_pack_start (GTK_BOX (chooser), sw, TRUE, TRUE, 0);
+ gtk_widget_show (sw);
+
+ renderer = gtk_cell_renderer_text_new ();
+ column = gtk_tree_view_column_new_with_attributes ("strategies",
+ renderer,
+ "text", STRAT_COLUMN_DESCRIPTION,
+ "weight", STRAT_COLUMN_CURRENT,
+ NULL);
+ priv->treeview = gtk_tree_view_new ();
+ gtk_widget_set_composite_name (priv->treeview, "gdict-strategy-chooser-treeview");
+ gtk_tree_view_set_model (GTK_TREE_VIEW (priv->treeview),
+ GTK_TREE_MODEL (priv->store));
+ gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->treeview), FALSE);
+ gtk_tree_view_append_column (GTK_TREE_VIEW (priv->treeview), column);
+ g_signal_connect (priv->treeview, "row-activated",
+ G_CALLBACK (row_activated_cb), chooser);
+ gtk_container_add (GTK_CONTAINER (sw), priv->treeview);
+ gtk_widget_show (priv->treeview);
+
+ hbox = gtk_hbox_new (FALSE, 0);
+
+ priv->refresh_button = gtk_button_new ();
+ gtk_button_set_image (GTK_BUTTON (priv->refresh_button),
+ gtk_image_new_from_stock (GTK_STOCK_REFRESH,
+ GTK_ICON_SIZE_SMALL_TOOLBAR));
+ g_signal_connect (priv->refresh_button, "clicked",
+ G_CALLBACK (refresh_button_clicked_cb),
+ chooser);
+ gtk_box_pack_start (GTK_BOX (hbox), priv->refresh_button, FALSE, FALSE, 0);
+ gtk_widget_show (priv->refresh_button);
+ gtk_widget_set_tooltip_text (priv->refresh_button,
+ _("Reload the list of available strategies"));
+
+ priv->clear_button = gtk_button_new ();
+ gtk_button_set_image (GTK_BUTTON (priv->clear_button),
+ gtk_image_new_from_stock (GTK_STOCK_CLEAR,
+ GTK_ICON_SIZE_SMALL_TOOLBAR));
+ g_signal_connect (priv->clear_button, "clicked",
+ G_CALLBACK (clear_button_clicked_cb),
+ chooser);
+ gtk_box_pack_start (GTK_BOX (hbox), priv->clear_button, FALSE, FALSE, 0);
+ gtk_widget_show (priv->clear_button);
+ gtk_widget_set_tooltip_text (priv->clear_button,
+ _("Clear the list of available strategies"));
+
+ gtk_box_pack_end (GTK_BOX (chooser), hbox, FALSE, FALSE, 0);
+ gtk_widget_show (hbox);
+ 
+ gtk_widget_pop_composite_child ();
+
+ return object;
+}
+
+static void
+gdict_strategy_chooser_class_init (GdictStrategyChooserClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ 
+ gobject_class->finalize = gdict_strategy_chooser_finalize;
+ gobject_class->dispose = gdict_strategy_chooser_dispose;
+ gobject_class->set_property = gdict_strategy_chooser_set_property;
+ gobject_class->get_property = gdict_strategy_chooser_get_property;
+ gobject_class->constructor = gdict_strategy_chooser_constructor;
+ 
+ /**
+ * GdictStrategyChooser:context:
+ *
+ * The #GdictContext object used to retrieve the list of strategies.
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_CONTEXT,
+ g_param_spec_object ("context",
+ "Context",
+ "The GdictContext object used to get the list of strategies",
+ GDICT_TYPE_CONTEXT,
+ (G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT)));
+
+ /**
+ * GdictStrategyChooser::strategy-activated:
+ * @chooser: the widget that received the signal
+ * @name: the name of the activated strategy
+ * @description: the description of the activate strategy
+ *
+ * The ::strategy-activated signal is emitted each time the user
+ * activates a strategy in the @chooser, either by double click or
+ * using the keyboard.
+ */
+ db_chooser_signals[STRATEGY_ACTIVATED] =
+ g_signal_new ("strategy-activated",
+ G_OBJECT_CLASS_TYPE (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GdictStrategyChooserClass, strategy_activated),
+ NULL, NULL,
+ gdict_marshal_VOID__STRING_STRING,
+ G_TYPE_NONE, 2,
+ G_TYPE_STRING,
+ G_TYPE_STRING);
+ 
+ g_type_class_add_private (gobject_class, sizeof (GdictStrategyChooserPrivate));
+}
+
+static void
+gdict_strategy_chooser_init (GdictStrategyChooser *chooser)
+{
+ GdictStrategyChooserPrivate *priv;
+
+ chooser->priv = priv = GDICT_STRATEGY_CHOOSER_GET_PRIVATE (chooser);
+
+ priv->results = -1;
+ priv->context = NULL;
+
+ priv->store = gtk_list_store_new (STRAT_N_COLUMNS,
+ G_TYPE_INT, /* strat_type */
+ G_TYPE_STRING, /* strat_name */
+ G_TYPE_STRING, /* strat_desc */
+ G_TYPE_INT /* strat_current */);
+
+ priv->start_id = 0;
+ priv->end_id = 0;
+ priv->match_id = 0;
+ priv->error_id = 0;
+}
+
+/**
+ * gdict_strategy_chooser_new:
+ *
+ * Creates a new #GdictStrategyChooser. Use this widget to show a list
+ * of matching strategies available on a dictionary source represented
+ * by a #GdictContext, set with gdict_strategy_chooser_set_context().
+ *
+ * Return value: the newly created #GdictStrategyChooser widget
+ *
+ * Since: 0.9
+ */
+GtkWidget *
+gdict_strategy_chooser_new (void)
+{
+ return g_object_new (GDICT_TYPE_STRATEGY_CHOOSER, NULL);
+}
+
+/**
+ * gdict_strategy_chooser_new_with_context:
+ * @context: a #GdictContext
+ *
+ * Creates a new #GdictStrategyChooser widget, using @context as the
+ * representation of a dictionary source.
+ *
+ * Return value: the newly created #GdictStrategyChooser widget
+ *
+ * Since: 0.9
+ */
+GtkWidget *
+gdict_strategy_chooser_new_with_context (GdictContext *context)
+{
+ g_return_val_if_fail (GDICT_IS_CONTEXT (context), NULL);
+ 
+ return g_object_new (GDICT_TYPE_STRATEGY_CHOOSER,
+ "context", context,
+ NULL);
+}
+
+/**
+ * gdict_strategy_chooser_get_context:
+ * @chooser: a #GdictStrategyChooser
+ *
+ * Retrieves the #GdictContext used by @chooser.
+ *
+ * Return value: a #GdictContext
+ *
+ * Since:
+ */
+GdictContext *
+gdict_strategy_chooser_get_context (GdictStrategyChooser *chooser)
+{
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), NULL);
+ 
+ return chooser->priv->context;
+}
+
+/**
+ * gdict_strategy_chooser_set_context:
+ * @chooser: a #GdictStrategyChooser
+ * @context: a #GdictContext, or %NULL to unset the context
+ *
+ * Sets the #GdictContext to be used by @chooser to retrieve the
+ * list of matching strategies.
+ *
+ * Since: 0.9
+ */
+void
+gdict_strategy_chooser_set_context (GdictStrategyChooser *chooser,
+ GdictContext *context)
+{
+ g_return_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser));
+ g_return_if_fail (context == NULL || GDICT_IS_CONTEXT (context));
+
+ set_gdict_context (chooser, context);
+
+ g_object_notify (G_OBJECT (chooser), "context");
+}
+
+/**
+ * gdict_strategy_chooser_get_strategies:
+ * @chooser: a #GdictStrategyChooser
+ * @length: return location for the length of the returned string list
+ *
+ * Retrieves the list of matching strategies available.
+ *
+ * Return value: a string vector containing the names of the matching
+ * strategies. Use g_strfreev() to deallocate the memory when done
+ *
+ * Since:0.9
+ */
+gchar **
+gdict_strategy_chooser_get_strategies (GdictStrategyChooser *chooser,
+ gsize *length)
+{
+ GdictStrategyChooserPrivate *priv;
+ GtkTreeIter iter;
+ gchar **retval;
+ gsize i;
+
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), NULL);
+
+ priv = chooser->priv;
+
+ if (!gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->store), &iter))
+ return NULL;
+
+ i = 0;
+ retval = g_new (gchar*, priv->results);
+
+ do
+ {
+ gchar *strat_name;
+
+ gtk_tree_model_get (GTK_TREE_MODEL (priv->store), &iter,
+ STRAT_COLUMN_NAME, &strat_name,
+ -1);
+
+ retval[i++] = strat_name;
+ }
+ while (gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->store), &iter));
+
+ retval[i] = NULL;
+
+ if (length)
+ *length = i;
+
+ return retval;
+}
+
+/**
+ * gdict_strategy_chooser_has_strategy:
+ * @chooser: a #GdictStrategyChooser
+ * @strategy: a strategy name
+ *
+ * Checks whether @strategy is available in the list of matching
+ * strategies displayed by @chooser.
+ *
+ * Return value: %TRUE if the strategy was found, %FALSE otherwise
+ *
+ * Since: 0.9
+ */
+gboolean
+gdict_strategy_chooser_has_strategy (GdictStrategyChooser *chooser,
+ const gchar *strategy)
+{
+ GdictStrategyChooserPrivate *priv;
+ GtkTreeIter iter;
+ gboolean retval;
+
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), FALSE);
+ g_return_val_if_fail (strategy != NULL, FALSE);
+
+ priv = chooser->priv;
+
+ if (!gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->store), &iter))
+ return FALSE;
+
+ retval = FALSE;
+
+ do
+ {
+ gchar *strat_name;
+
+ gtk_tree_model_get (GTK_TREE_MODEL (priv->store), &iter,
+ STRAT_COLUMN_NAME, &strat_name,
+ -1);
+ 
+ if (strcmp (strat_name, strategy) == 0)
+ {
+ retval = TRUE;
+ g_free (strat_name);
+ break;
+ }
+
+ g_free (strat_name);
+ }
+ while (gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->store), &iter));
+
+ return retval;
+}
+
+/**
+ * gdict_strategy_chooser_count_strategies:
+ * @chooser: a #GdictStrategyChooser
+ *
+ * Returns the number of strategies found.
+ *
+ * Return value: the number of strategies or -1 if case of error
+ *
+ * Since:
+ */
+gint
+gdict_strategy_chooser_count_strategies (GdictStrategyChooser *chooser)
+{
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), -1);
+
+ return chooser->priv->results;
+}
+
+static void
+lookup_start_cb (GdictContext *context,
+ gpointer user_data)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (user_data);
+ GdictStrategyChooserPrivate *priv = chooser->priv;
+
+ if (!priv->busy_cursor)
+ priv->busy_cursor = gdk_cursor_new (GDK_WATCH);
+
+ if (gtk_widget_get_window (GTK_WIDGET (chooser)))
+ gdk_window_set_cursor (gtk_widget_get_window (GTK_WIDGET (chooser)), priv->busy_cursor);
+
+ priv->is_searching = TRUE;
+}
+
+static void
+lookup_end_cb (GdictContext *context,
+ gpointer user_data)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (user_data);
+ GdictStrategyChooserPrivate *priv = chooser->priv;
+
+ if (gtk_widget_get_window (GTK_WIDGET (chooser)))
+ gdk_window_set_cursor (gtk_widget_get_window (GTK_WIDGET (chooser)), NULL);
+
+ priv->is_searching = FALSE;
+}
+
+static void
+strategy_found_cb (GdictContext *context,
+ GdictStrategy *strategy,
+ gpointer user_data)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (user_data);
+ GdictStrategyChooserPrivate *priv = chooser->priv;
+ const gchar *name, *description;
+ GtkTreeIter iter;
+ gint weight = PANGO_WEIGHT_NORMAL;
+
+ name = gdict_strategy_get_name (strategy);
+ description = gdict_strategy_get_description (strategy);
+
+ GDICT_NOTE (CHOOSER, "STRATEGY: `%s' (`%s')",
+ name,
+ description);
+
+ if (priv->current_strat && !strcmp (priv->current_strat, name))
+ weight = PANGO_WEIGHT_BOLD;
+
+ gtk_list_store_append (priv->store, &iter);
+ gtk_list_store_set (priv->store, &iter,
+ STRAT_COLUMN_TYPE, STRATEGY_NAME,
+ STRAT_COLUMN_NAME, name,
+ STRAT_COLUMN_DESCRIPTION, description,
+ STRAT_COLUMN_CURRENT, weight,
+ -1);
+
+ priv->results += 1;
+}
+
+static void
+error_cb (GdictContext *context,
+ const GError *error,
+ gpointer user_data)
+{
+ GdictStrategyChooser *chooser = GDICT_STRATEGY_CHOOSER (user_data);
+
+ if (gtk_widget_get_window (GTK_WIDGET (chooser)))
+ gdk_window_set_cursor (gtk_widget_get_window (GTK_WIDGET (chooser)), NULL);
+
+ chooser->priv->is_searching = FALSE;
+ chooser->priv->results = 0;
+}
+
+/**
+ * gdict_strategy_chooser_refresh:
+ * @chooser: a #GdictStrategyChooser
+ *
+ * Reloads the list of available strategies.
+ *
+ * Since: 0.10
+ */
+void
+gdict_strategy_chooser_refresh (GdictStrategyChooser *chooser)
+{
+ GdictStrategyChooserPrivate *priv;
+ GError *db_error;
+ 
+ g_return_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser));
+
+ priv = chooser->priv;
+
+ if (!priv->context)
+ {
+ g_warning ("Attempting to retrieve the available strategies, but "
+ "no GdictContext has been set. Use gdict_strategy_chooser_set_context() "
+ "before invoking gdict_strategy_chooser_refresh().");
+ return;
+ }
+
+ if (priv->is_searching)
+ return;
+
+ gdict_strategy_chooser_clear (chooser);
+
+ if (!priv->start_id)
+ {
+ priv->start_id = g_signal_connect (priv->context, "lookup-start",
+ G_CALLBACK (lookup_start_cb),
+ chooser);
+ priv->match_id = g_signal_connect (priv->context, "strategy-found",
+ G_CALLBACK (strategy_found_cb),
+ chooser);
+ priv->end_id = g_signal_connect (priv->context, "lookup-end",
+ G_CALLBACK (lookup_end_cb),
+ chooser);
+ }
+
+ if (!priv->error_id)
+ priv->error_id = g_signal_connect (priv->context, "error",
+ G_CALLBACK (error_cb),
+ chooser);
+
+ db_error = NULL;
+ gdict_context_lookup_strategies (priv->context, &db_error);
+ if (db_error)
+ {
+ GtkTreeIter iter;
+
+ gtk_list_store_append (priv->store, &iter);
+ gtk_list_store_set (priv->store, &iter,
+ STRAT_COLUMN_TYPE, STRATEGY_ERROR,
+ STRAT_COLUMN_NAME, _("Error while matching"),
+ STRAT_COLUMN_DESCRIPTION, NULL,
+ -1);
+
+ g_warning ("Error while retrieving strategies: %s",
+ db_error->message);
+
+ g_error_free (db_error);
+ }
+}
+
+/**
+ * gdict_strategy_chooser_clear:
+ * @chooser: a #GdictStrategyChooser
+ *
+ * Clears @chooser.
+ *
+ * Since: 0.10
+ */
+void
+gdict_strategy_chooser_clear (GdictStrategyChooser *chooser)
+{
+ GdictStrategyChooserPrivate *priv;
+
+ g_return_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser));
+
+ priv = chooser->priv;
+
+ gtk_tree_view_set_model (GTK_TREE_VIEW (priv->treeview), NULL);
+
+ gtk_list_store_clear (priv->store);
+ priv->results = 0;
+
+ gtk_tree_view_set_model (GTK_TREE_VIEW (priv->treeview),
+ GTK_TREE_MODEL (priv->store));
+}
+
+typedef struct
+{
+ gchar *strat_name;
+ GdictStrategyChooser *chooser;
+ 
+ guint found : 1;
+ guint do_select : 1;
+ guint do_activate : 1;
+} SelectData;
+
+static gboolean
+scan_for_strat_name (GtkTreeModel *model,
+ GtkTreePath *path,
+ GtkTreeIter *iter,
+ gpointer user_data)
+{
+ SelectData *select_data = user_data;
+ gchar *strat_name = NULL;
+
+ if (!select_data)
+ return TRUE;
+
+ gtk_tree_model_get (model, iter, STRAT_COLUMN_NAME, &strat_name, -1);
+ if (!strat_name)
+ return FALSE;
+
+ if (strcmp (strat_name, select_data->strat_name) == 0)
+ {
+ GtkTreeView *tree_view;
+ GtkTreeSelection *selection;
+
+ select_data->found = TRUE;
+
+ tree_view = GTK_TREE_VIEW (select_data->chooser->priv->treeview);
+ if (select_data->do_activate)
+ {
+ GtkTreeViewColumn *column;
+
+ gtk_list_store_set (GTK_LIST_STORE (model), iter,
+ STRAT_COLUMN_CURRENT, PANGO_WEIGHT_BOLD,
+ -1);
+
+ column = gtk_tree_view_get_column (tree_view, 2);
+ gtk_tree_view_row_activated (tree_view, path, column);
+ }
+
+ selection = gtk_tree_view_get_selection (tree_view);
+ if (select_data->do_select)
+ gtk_tree_selection_select_path (selection, path);
+ else
+ gtk_tree_selection_unselect_path (selection, path);
+ }
+ else
+ {
+ gtk_list_store_set (GTK_LIST_STORE (model), iter,
+ STRAT_COLUMN_CURRENT, PANGO_WEIGHT_NORMAL,
+ -1);
+ }
+
+ g_free (strat_name);
+
+ return FALSE;
+}
+
+/**
+ * gdict_strategy_chooser_select_strategy:
+ * @chooser: a #GdictStrategyChooser
+ * @strat_name: the name of the strategy to select
+ *
+ * Selects @strat_name, if available.
+ *
+ * Return value: %TRUE if the matching strategy was found and selected
+ *
+ * Since: 0.10
+ */
+gboolean
+gdict_strategy_chooser_select_strategy (GdictStrategyChooser *chooser,
+ const gchar *strat_name)
+{
+ GdictStrategyChooserPrivate *priv;
+ SelectData data;
+ gboolean retval;
+
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), FALSE);
+ g_return_val_if_fail (strat_name != NULL, FALSE);
+
+ priv = chooser->priv;
+
+ data.strat_name = g_strdup (strat_name);
+ data.chooser = chooser;
+ data.found = FALSE;
+ data.do_select = TRUE;
+ data.do_activate = FALSE;
+
+ gtk_tree_model_foreach (GTK_TREE_MODEL (priv->store),
+ scan_for_strat_name,
+ &data);
+
+ retval = data.found;
+
+ g_free (data.strat_name);
+
+ return retval;
+}
+
+/**
+ * gdict_strategy_chooser_unselect_strategy:
+ * @chooser: a #GdictStrategyChooser
+ * @strat_name: the name of the strategy to unselect
+ *
+ * Unselects @strat_name from the list.
+ *
+ * Return value: %TRUE if the matching strategy was found and successfully
+ * unselected
+ *
+ * Since: 0.10
+ */
+gboolean
+gdict_strategy_chooser_unselect_strategy (GdictStrategyChooser *chooser,
+ const gchar *strat_name)
+{
+ GdictStrategyChooserPrivate *priv;
+ SelectData data;
+ gboolean retval;
+
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), FALSE);
+ g_return_val_if_fail (strat_name != NULL, FALSE);
+
+ priv = chooser->priv;
+
+ data.strat_name = g_strdup (strat_name);
+ data.chooser = chooser;
+ data.found = FALSE;
+ data.do_select = FALSE;
+ data.do_activate = FALSE;
+
+ gtk_tree_model_foreach (GTK_TREE_MODEL (priv->store),
+ scan_for_strat_name,
+ &data);
+
+ retval = data.found;
+
+ g_free (data.strat_name);
+
+ return retval;
+}
+
+/**
+ * gdict_strategy_chooser_set_current_strategy:
+ * @chooser: a #GdictStrategyChooser
+ * @strat_name: the name of the matching strategy
+ *
+ * Sets @strat_name as the current matching strategy.
+ *
+ * Return value: %TRUE if the matching strategy was found
+ *
+ * Since: 0.10
+ */
+gboolean
+gdict_strategy_chooser_set_current_strategy (GdictStrategyChooser *chooser,
+ const gchar *strat_name)
+{
+ GdictStrategyChooserPrivate *priv;
+ SelectData data;
+ gboolean retval;
+
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), FALSE);
+ g_return_val_if_fail (strat_name != NULL, FALSE);
+
+ priv = chooser->priv;
+
+ if (priv->current_strat && !strcmp (priv->current_strat, strat_name))
+ return TRUE;
+
+ data.strat_name = g_strdup (strat_name);
+ data.chooser = chooser;
+ data.found = FALSE;
+ data.do_select = TRUE;
+ data.do_activate = TRUE;
+
+ gtk_tree_model_foreach (GTK_TREE_MODEL (priv->store),
+ scan_for_strat_name,
+ &data);
+
+ retval = data.found;
+
+ if (data.found)
+ {
+ g_free (priv->current_strat);
+ priv->current_strat = data.strat_name;
+ }
+ else
+ g_free (data.strat_name);
+
+ return retval;
+}
+
+/**
+ * gdict_strategy_chooser_get_current_strategy:
+ * @chooser: a #GdictStrategyChooser
+ *
+ * Retrieves the current matching strategy.
+ *
+ * Return value: a newly allocated string containing the name of
+ * the current matching strategy
+ *
+ * Since: 0.10
+ */
+gchar *
+gdict_strategy_chooser_get_current_strategy (GdictStrategyChooser *chooser)
+{
+ GdictStrategyChooserPrivate *priv;
+ GtkTreeSelection *selection;
+ GtkTreeModel *model;
+ GtkTreeIter iter;
+ gchar *retval = NULL;
+
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), NULL);
+ 
+ priv = chooser->priv;
+
+ selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));
+ if (!gtk_tree_selection_get_selected (selection, &model, &iter))
+ return NULL;
+
+ gtk_tree_model_get (model, &iter, STRAT_COLUMN_NAME, &retval, -1);
+ 
+ g_free (priv->current_strat);
+ priv->current_strat = g_strdup (retval);
+
+ return retval;
+}
+
+/**
+ * gdict_strategy_chooser_add_button:
+ * @chooser: a #GdictStrategyChooser
+ * @button_text: text of the button (can be a stock id)
+ *
+ * Creates a new button and packs it into the #GdictStrategyChooser
+ * "action area".
+ *
+ * Return value: the packed #GtkButton
+ *
+ * Since: 0.10
+ */
+GtkWidget *
+gdict_strategy_chooser_add_button (GdictStrategyChooser *chooser,
+ const gchar *button_text)
+{
+ GdictStrategyChooserPrivate *priv;
+ GtkWidget *button;
+
+ g_return_val_if_fail (GDICT_IS_STRATEGY_CHOOSER (chooser), NULL);
+ g_return_val_if_fail (button_text != NULL, NULL);
+
+ priv = chooser->priv;
+
+ button = gtk_button_new_from_stock (button_text);
+
+ gtk_widget_set_can_default (button, TRUE);
+
+ gtk_widget_show (button);
+
+ gtk_box_pack_end (GTK_BOX (priv->buttons_box), button, FALSE, TRUE, 0);
+
+ return button;
+}
author	Stefano Karapetsas <[email protected]>	2011-12-14 10:13:54 +0100
committer	Stefano Karapetsas <[email protected]>	2011-12-14 10:13:54 +0100
commit	ef0467789bfc8406b57ba553e4d59f4d6c3f9be8 (patch)
tree	09d541636a16cb38448fe6183289ebdc3080c1bf /mate-dictionary/libgdict/gdict-strategy-chooser.c
download	mate-utils-ef0467789bfc8406b57ba553e4d59f4d6c3f9be8.tar.bz2 mate-utils-ef0467789bfc8406b57ba553e4d59f4d6c3f9be8.tar.xz