Add search bar in chat text views (#585168)

1 files changed, 263 insertions, 0 deletions

diff --git a/libempathy-gtk/empathy-search-bar.c b/libempathy-gtk/empathy-search-bar.c
new file mode 100644
index 000000000..e4bad3b43
--- /dev/null
+++ b/libempathy-gtk/empathy-search-bar.c
@@ -0,0 +1,263 @@
+/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * Copyright (C) 2010 Thomas Meire <blackskad@gmail.com>
+ *
+ * The code contained in this file is free software; you can redistribute
+ * it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either version
+ * 2.1 of the License, or (at your option) any later version.
+ *
+ * This file 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this code; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <gtk/gtk.h>
+
+#include <libempathy/empathy-utils.h>
+
+#include "empathy-chat-view.h"
+#include "empathy-search-bar.h"
+#include "empathy-ui-utils.h"
+
+#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathySearchBar)
+
+G_DEFINE_TYPE (EmpathySearchBar, empathy_search_bar, GTK_TYPE_BIN);
+
+typedef struct _EmpathySearchBarPriv EmpathySearchBarPriv;
+struct _EmpathySearchBarPriv
+{
+  EmpathyChatView *chat_view;
+
+  GtkWidget *search_entry;
+  gchar *last_search;
+
+  GtkWidget *search_close;
+  GtkWidget *search_previous;
+  GtkWidget *search_next;
+  GtkWidget *search_not_found;
+};
+
+GtkWidget *
+empathy_search_bar_new (EmpathyChatView *view)
+{
+  EmpathySearchBar *self = g_object_new (EMPATHY_TYPE_SEARCH_BAR, NULL);
+
+  GET_PRIV (self)->chat_view = view;
+
+  return GTK_WIDGET (self);
+}
+
+static void
+empathy_search_bar_size_request (GtkWidget *widget,
+    GtkRequisition *requisition)
+{
+  GtkBin *bin;
+  GtkWidget *child;
+
+  bin = GTK_BIN (widget);
+  child = gtk_bin_get_child (bin);
+
+  if (child && gtk_widget_get_visible (child))
+    {
+      GtkRequisition child_requisition;
+
+      gtk_widget_size_request (child, &child_requisition);
+
+      requisition->width = child_requisition.width;
+      requisition->height = child_requisition.height;
+    }
+}
+
+static void
+empathy_search_bar_size_allocate (GtkWidget *widget,
+    GtkAllocation *allocation)
+{
+  GtkBin *bin;
+  GtkWidget *child;
+  GtkAllocation child_allocation;
+
+  bin = GTK_BIN (widget);
+  child = gtk_bin_get_child (bin);
+
+  gtk_widget_set_allocation (widget, allocation);
+
+  if (child && gtk_widget_get_visible (child))
+    {
+      child_allocation.x = allocation->x;
+      child_allocation.y = allocation->y;
+      child_allocation.width = MAX (allocation->width, 0);
+      child_allocation.height = MAX (allocation->height, 0);
+
+      gtk_widget_size_allocate (child, &child_allocation);
+    }
+}
+
+static void
+empathy_search_bar_finalize (GObject *object)
+{
+  EmpathySearchBarPriv *priv = GET_PRIV (object);
+
+  g_free (priv->last_search);
+}
+
+static void
+empathy_search_bar_update_buttons (EmpathySearchBar *self)
+{
+  gboolean can_go_forward = FALSE;
+  gboolean can_go_backward = FALSE;
+
+  EmpathySearchBarPriv* priv = GET_PRIV (self);
+
+  /* update previous / next buttons */
+  if (priv->last_search)
+    {
+      empathy_chat_view_find_abilities (priv->chat_view, priv->last_search,
+          &can_go_backward, &can_go_forward);
+    }
+
+  gtk_widget_set_sensitive (priv->search_previous,
+      can_go_backward && !EMP_STR_EMPTY (priv->last_search));
+  gtk_widget_set_sensitive (priv->search_next,
+      can_go_forward && !EMP_STR_EMPTY (priv->last_search));
+}
+
+void
+empathy_search_bar_show (EmpathySearchBar *self)
+{
+  EmpathySearchBarPriv *priv = GET_PRIV (self);
+
+  if (priv->last_search)
+    {
+      /* make sure we have an up to date last_search */
+      g_free (priv->last_search);
+      priv->last_search = gtk_editable_get_chars (
+          GTK_EDITABLE (priv->search_entry), 0, -1);
+    }
+  empathy_chat_view_highlight (priv->chat_view, priv->last_search);
+  empathy_search_bar_update_buttons (self);
+
+  /* grab the focus to the search entry */
+  gtk_widget_grab_focus (priv->search_entry);
+
+  gtk_widget_show (GTK_WIDGET (self));
+}
+
+
+static void
+empathy_search_bar_close_cb (GtkButton *button,
+    gpointer user_data)
+{
+  EmpathySearchBarPriv *priv = GET_PRIV (user_data);
+
+  empathy_chat_view_highlight (priv->chat_view, "");
+  gtk_widget_hide (GTK_WIDGET (user_data));
+
+  /* give the focus back to the focus-chain with the chat view */
+  gtk_widget_grab_focus (GTK_WIDGET (priv->chat_view));
+}
+
+static void
+empathy_search_bar_entry_changed (GtkEditable *entry,
+    gpointer user_data)
+{
+  EmpathySearchBarPriv *priv;
+  gboolean found;
+  gchar *search;
+
+  priv = GET_PRIV (user_data);
+
+  search = gtk_editable_get_chars (entry, 0, -1);
+
+  found = empathy_chat_view_find_previous (priv->chat_view, search, TRUE);
+  gtk_widget_set_visible (priv->search_not_found,
+      !(found || EMP_STR_EMPTY (search)));
+
+  empathy_chat_view_highlight (priv->chat_view, search);
+
+  g_free (priv->last_search);
+  priv->last_search = search;
+
+  empathy_search_bar_update_buttons (EMPATHY_SEARCH_BAR (user_data));
+}
+
+static void
+empathy_search_bar_next_cb (GtkButton *button,
+    gpointer user_data)
+{
+  EmpathySearchBarPriv *priv = GET_PRIV (user_data);
+
+  empathy_chat_view_find_next (priv->chat_view, priv->last_search, FALSE);
+  empathy_search_bar_update_buttons (EMPATHY_SEARCH_BAR (user_data));
+}
+
+static void
+empathy_search_bar_previous_cb (GtkButton *button,
+    gpointer user_data)
+{
+  EmpathySearchBarPriv *priv = GET_PRIV (user_data);
+
+  empathy_chat_view_find_previous (priv->chat_view, priv->last_search, FALSE);
+  empathy_search_bar_update_buttons (EMPATHY_SEARCH_BAR (user_data));
+}
+
+static void
+empathy_search_bar_init (EmpathySearchBar * self)
+{
+  gchar *filename;
+  GtkBuilder *gui;
+  GtkWidget *internal;
+  EmpathySearchBarPriv *priv;
+
+  priv = G_TYPE_INSTANCE_GET_PRIVATE (self, EMPATHY_TYPE_SEARCH_BAR,
+      EmpathySearchBarPriv);
+
+  self->priv = priv;
+
+  filename = empathy_file_lookup ("empathy-search-bar.ui", "libempathy-gtk");
+  gui = empathy_builder_get_file (filename,
+      "search_widget", &internal,
+      "search_close", &priv->search_close,
+      "search_entry", &priv->search_entry,
+      "search_previous", &priv->search_previous,
+      "search_next", &priv->search_next,
+      "search_not_found", &priv->search_not_found,
+      NULL);
+  g_free (filename);
+
+  /* Add the signals */
+  empathy_builder_connect (gui, self,
+      "search_close", "clicked", empathy_search_bar_close_cb,
+      "search_entry", "changed", empathy_search_bar_entry_changed,
+      "search_previous", "clicked", empathy_search_bar_previous_cb,
+      "search_next", "clicked", empathy_search_bar_next_cb,
+      NULL);
+
+  gtk_container_add (GTK_CONTAINER (self), internal);
+  gtk_widget_show_all (internal);
+  gtk_widget_hide (priv->search_not_found);
+  g_object_unref (gui);
+}
+
+static void
+empathy_search_bar_class_init (EmpathySearchBarClass *class)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  gobject_class->finalize = empathy_search_bar_finalize;
+
+  g_type_class_add_private (gobject_class, sizeof (EmpathySearchBarPriv));
+
+  /* Neither GtkBin nor GtkContainer seems to do this for us :( */
+  widget_class->size_request = empathy_search_bar_size_request;
+  widget_class->size_allocate = empathy_search_bar_size_allocate;
+}
+