[gnome-builder] terminal: add context menu

[Sébastien Lafargue <slafargue src gnome org>]

commit 992b88370e2a09d594a732b9ca4165175b233450
Author: Sebastien Lafargue <slafargue gnome org>
Date:   Fri Mar 4 17:13:26 2016 +0100

    terminal: add context menu

 plugins/terminal/gb-terminal.c |  189 +++++++++++++++++++++++++++++++++++++++-
 plugins/terminal/gtk/menus.ui  |   28 ++++++
 2 files changed, 216 insertions(+), 1 deletions(-)
---
diff --git a/plugins/terminal/gb-terminal.c b/plugins/terminal/gb-terminal.c
index 946b934..c216f28 100644
--- a/plugins/terminal/gb-terminal.c
+++ b/plugins/terminal/gb-terminal.c
@@ -16,25 +16,211 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <glib/gi18n.h>
+#include <ide.h>
+
+#include "egg-widget-action-group.h"
+
 #include "gb-terminal.h"
 
+typedef struct
+{
+  GbTerminal *terminal;
+  guint       button;
+  guint       time;
+  GdkDevice  *device;
+} PopupInfo;
+
 struct _GbTerminal
 {
-  VteTerminal parent;
+  VteTerminal  parent;
+
+  GtkWidget   *popup_menu;
 };
 
 struct _GbTerminalClass
 {
   VteTerminalClass parent;
+
+  void (*populate_popup) (GbTerminal *self,
+                          GtkWidget  *widget);
+  void (*select_all)     (GbTerminal *self,
+                          gboolean    all);
 };
 
 G_DEFINE_TYPE (GbTerminal, gb_terminal, VTE_TYPE_TERMINAL)
 
+enum {
+  POPULATE_POPUP,
+  SELECT_ALL,
+  LAST_SIGNAL
+};
+
+static guint signals [LAST_SIGNAL];
+
+/* The popup code is an adaptation of GtktextView popupmenu functions */
+static void
+popup_menu_detach (GtkWidget *attach_widget,
+                   GtkMenu   *menu)
+{
+  GbTerminal *terminal = GB_TERMINAL (attach_widget);
+
+  terminal->popup_menu = NULL;
+}
+
+static void
+popup_targets_received (GtkClipboard     *clipboard,
+                        GtkSelectionData *data,
+                        gpointer          user_data)
+{
+  GMenu *menu;
+  PopupInfo *popup_info = user_data;
+  GbTerminal *terminal = popup_info->terminal;
+
+  if (gtk_widget_get_realized (GTK_WIDGET (terminal)))
+    {
+      GActionGroup *group;
+      GAction *action;
+      gboolean clipboard_contains_text;
+      gboolean have_selection;
+
+      clipboard_contains_text = gtk_selection_data_targets_include_text (data);
+      have_selection = vte_terminal_get_has_selection (VTE_TERMINAL (terminal));
+
+      if (terminal->popup_menu)
+        gtk_widget_destroy (terminal->popup_menu);
+
+      menu = ide_application_get_menu_by_id (IDE_APPLICATION_DEFAULT, "gb-terminal-view-popup-menu");
+      terminal->popup_menu = gtk_menu_new_from_model (G_MENU_MODEL (menu));
+
+      group = gtk_widget_get_action_group (GTK_WIDGET (terminal), "terminal");
+
+      action = g_action_map_lookup_action (G_ACTION_MAP (group), "copy-clipboard");
+      g_simple_action_set_enabled (G_SIMPLE_ACTION (action), have_selection);
+      action = g_action_map_lookup_action (G_ACTION_MAP (group), "paste-clipboard");
+      g_simple_action_set_enabled (G_SIMPLE_ACTION (action), clipboard_contains_text);
+
+      gtk_style_context_add_class (gtk_widget_get_style_context (terminal->popup_menu), 
GTK_STYLE_CLASS_CONTEXT_MENU);
+      gtk_menu_attach_to_widget (GTK_MENU (terminal->popup_menu), GTK_WIDGET (terminal), popup_menu_detach);
+
+      g_signal_emit (terminal, signals[POPULATE_POPUP], 0, terminal->popup_menu);
+
+      if (popup_info->device)
+        gtk_menu_popup_for_device (GTK_MENU (terminal->popup_menu),
+                                   popup_info->device, NULL, NULL, NULL, NULL, NULL,
+                                   popup_info->button, popup_info->time);
+      else
+        {
+          gtk_menu_popup (GTK_MENU (terminal->popup_menu), NULL, NULL,
+                          NULL, terminal,
+                          0, gtk_get_current_event_time ());
+
+          gtk_menu_shell_select_first (GTK_MENU_SHELL (terminal->popup_menu), FALSE);
+        }
+    }
+
+  g_object_unref (terminal);
+  g_slice_free (PopupInfo, popup_info);
+}
+
+static void
+gb_terminal_do_popup (GbTerminal     *terminal,
+                      const GdkEvent *event)
+{
+  PopupInfo *popup_info = g_slice_new (PopupInfo);
+
+  popup_info->terminal = g_object_ref (terminal);
+
+  if (event != NULL)
+    {
+      gdk_event_get_button (event, &popup_info->button);
+      popup_info->time = gdk_event_get_time (event);
+      popup_info->device = gdk_event_get_device (event);
+    }
+  else
+    {
+      popup_info->button = 0;
+      popup_info->time = gtk_get_current_event_time ();
+      popup_info->device = NULL;
+    }
+
+  gtk_clipboard_request_contents (gtk_widget_get_clipboard (GTK_WIDGET (terminal), GDK_SELECTION_CLIPBOARD),
+                                  gdk_atom_intern_static_string ("TARGETS"),
+                                  popup_targets_received,
+                                  popup_info);
+}
+
+static gboolean
+gb_terminal_popup_menu (GtkWidget *widget)
+{
+  gb_terminal_do_popup (GB_TERMINAL (widget), NULL);
+  return TRUE;
+}
+
+static gboolean
+gb_terminal_button_press_event (GtkWidget      *widget,
+                                GdkEventButton *button)
+{
+  GbTerminal *self = (GbTerminal *)widget;
+
+  g_assert (GB_IS_TERMINAL (self));
+  g_assert (button != NULL);
+
+  if ((button->type == GDK_BUTTON_PRESS) && (button->button == GDK_BUTTON_SECONDARY))
+    {
+      if (!gtk_widget_has_focus (GTK_WIDGET (self)))
+        gtk_widget_grab_focus (GTK_WIDGET (self));
+
+      gb_terminal_do_popup (self, (GdkEvent *)button);
+      return GDK_EVENT_STOP;
+    }
+
+  return GTK_WIDGET_CLASS (gb_terminal_parent_class)->button_press_event (widget, button);
+}
+
+static void
+gb_terminal_real_select_all (GbTerminal *self,
+                             gboolean    all)
+{
+  g_assert (GB_IS_TERMINAL (self));
+
+  if (all)
+    vte_terminal_select_all (VTE_TERMINAL (self));
+  else
+    vte_terminal_unselect_all (VTE_TERMINAL (self));
+}
+
 static void
 gb_terminal_class_init (GbTerminalClass *klass)
 {
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
   GtkBindingSet *binding_set;
 
+  widget_class->button_press_event = gb_terminal_button_press_event;
+  widget_class->popup_menu = gb_terminal_popup_menu;
+
+  klass->select_all = gb_terminal_real_select_all;
+
+  signals [POPULATE_POPUP] =
+    g_signal_new ("populate-popup",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (GbTerminalClass, populate_popup),
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE,
+                  1,
+                  GTK_TYPE_WIDGET);
+
+  signals [SELECT_ALL] =
+    g_signal_new ("select-all",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+                  G_STRUCT_OFFSET (GbTerminalClass, select_all),
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE,
+                  1,
+                  G_TYPE_BOOLEAN);
+
   binding_set = gtk_binding_set_by_class (klass);
 
   gtk_binding_entry_add_signal (binding_set,
@@ -53,4 +239,5 @@ gb_terminal_class_init (GbTerminalClass *klass)
 static void
 gb_terminal_init (GbTerminal *self)
 {
+  egg_widget_action_group_attach (self, "terminal");
 }
diff --git a/plugins/terminal/gtk/menus.ui b/plugins/terminal/gtk/menus.ui
index b53270f..bd35ebf 100644
--- a/plugins/terminal/gtk/menus.ui
+++ b/plugins/terminal/gtk/menus.ui
@@ -9,4 +9,32 @@
       </item>
     </section>
   </menu>
+  <menu id="gb-terminal-view-popup-menu">
+    <section id="gb-terminal-view-popup-menu-clipboard-section">
+      <item>
+        <attribute name="id">copy</attribute>
+        <attribute name="label" translatable="yes">_Copy</attribute>
+        <attribute name="action">terminal.copy-clipboard</attribute>
+      </item>
+      <item>
+        <attribute name="label" translatable="yes">_Paste</attribute>
+        <attribute name="action">terminal.paste-clipboard</attribute>
+      </item>
+    </section>
+    <section id="gb-terminal-view-popup-menu-selection-section">
+      <submenu id="gb-terminal-view-popup-menu-selection-submenu">
+        <attribute name="label" translatable="yes">Selection</attribute>
+        <item>
+          <attribute name="label" translatable="yes">Select _All</attribute>
+          <attribute name="action">terminal.select-all</attribute>
+          <attribute name="target" type="(b)">(true,)</attribute>
+        </item>
+        <item>
+          <attribute name="label" translatable="yes">Select _None</attribute>
+          <attribute name="action">terminal.select-all</attribute>
+          <attribute name="target" type="(b)">(false,)</attribute>
+        </item>
+      </submenu>
+    </section>
+  </menu>
 </interface>