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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/gtk/tab_contents_container_gtk.h"
#include <algorithm>
#include "base/i18n/rtl.h"
#include "chrome/browser/ui/gtk/status_bubble_gtk.h"
#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
#include "content/browser/renderer_host/render_widget_host_view_gtk.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/web_contents.h"
#include "ui/base/gtk/gtk_expanded_container.h"
#include "ui/base/gtk/gtk_floating_container.h"
#include "ui/gfx/native_widget_types.h"
using content::WebContents;
TabContentsContainerGtk::TabContentsContainerGtk(StatusBubbleGtk* status_bubble)
: tab_(NULL),
preview_(NULL),
status_bubble_(status_bubble) {
Init();
}
TabContentsContainerGtk::~TabContentsContainerGtk() {
floating_.Destroy();
}
void TabContentsContainerGtk::Init() {
// A high level overview of the TabContentsContainer:
//
// +- GtkFloatingContainer |floating_| -------------------------------+
// |+- GtkExpandedContainer |expanded_| -----------------------------+|
// || ||
// || ||
// || ||
// || ||
// |+- (StatusBubble) ------+ ||
// |+ + ||
// |+-----------------------+----------------------------------------+|
// +------------------------------------------------------------------+
floating_.Own(gtk_floating_container_new());
gtk_widget_set_name(floating_.get(), "chrome-tab-contents-container");
g_signal_connect(floating_.get(), "focus", G_CALLBACK(OnFocusThunk), this);
expanded_ = gtk_expanded_container_new();
gtk_container_add(GTK_CONTAINER(floating_.get()), expanded_);
if (status_bubble_) {
gtk_floating_container_add_floating(GTK_FLOATING_CONTAINER(floating_.get()),
status_bubble_->widget());
g_signal_connect(floating_.get(), "set-floating-position",
G_CALLBACK(OnSetFloatingPosition), this);
}
gtk_widget_show(expanded_);
gtk_widget_show(floating_.get());
ViewIDUtil::SetDelegateForWidget(widget(), this);
}
void TabContentsContainerGtk::SetTab(TabContentsWrapper* tab) {
HideTab(tab_);
if (tab_) {
registrar_.Remove(this, content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
content::Source<WebContents>(tab_->tab_contents()));
}
tab_ = tab;
if (tab_ == preview_) {
// If the preview contents is becoming the new permanent tab contents, we
// just reassign some pointers.
preview_ = NULL;
} else if (tab_) {
// Otherwise we actually have to add it to the widget hierarchy.
PackTab(tab);
registrar_.Add(this, content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
content::Source<WebContents>(tab_->tab_contents()));
}
}
TabContentsWrapper* TabContentsContainerGtk::GetVisibleTab() {
return preview_ ? preview_ : tab_;
}
void TabContentsContainerGtk::SetPreview(TabContentsWrapper* preview) {
if (preview_)
RemovePreview();
else
HideTab(tab_);
preview_ = preview;
PackTab(preview);
registrar_.Add(this, content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
content::Source<WebContents>(preview_->tab_contents()));
}
void TabContentsContainerGtk::RemovePreview() {
if (!preview_)
return;
HideTab(preview_);
GtkWidget* preview_widget = preview_->tab_contents()->GetNativeView();
if (preview_widget)
gtk_container_remove(GTK_CONTAINER(expanded_), preview_widget);
registrar_.Remove(this, content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
content::Source<WebContents>(preview_->tab_contents()));
preview_ = NULL;
}
void TabContentsContainerGtk::PopPreview() {
if (!preview_)
return;
RemovePreview();
PackTab(tab_);
}
void TabContentsContainerGtk::PackTab(TabContentsWrapper* tab) {
if (!tab)
return;
gfx::NativeView widget = tab->tab_contents()->GetNativeView();
if (widget) {
if (widget->parent != expanded_)
gtk_container_add(GTK_CONTAINER(expanded_), widget);
gtk_widget_show(widget);
}
// We need to make sure that we are below the findbar.
// Sometimes the content native view will be null.
if (tab->tab_contents()->GetContentNativeView()) {
GdkWindow* content_gdk_window =
tab->tab_contents()->GetContentNativeView()->window;
if (content_gdk_window)
gdk_window_lower(content_gdk_window);
}
tab->tab_contents()->ShowContents();
}
void TabContentsContainerGtk::HideTab(TabContentsWrapper* tab) {
if (!tab)
return;
gfx::NativeView widget = tab->tab_contents()->GetNativeView();
if (widget)
gtk_widget_hide(widget);
tab->tab_contents()->WasHidden();
}
void TabContentsContainerGtk::DetachTab(TabContentsWrapper* tab) {
gfx::NativeView widget = tab->tab_contents()->GetNativeView();
// It is possible to detach an unrealized, unparented TabContents if you
// slow things down enough in valgrind. Might happen in the real world, too.
if (widget && widget->parent) {
DCHECK_EQ(widget->parent, expanded_);
gtk_container_remove(GTK_CONTAINER(expanded_), widget);
}
}
void TabContentsContainerGtk::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(type == content::NOTIFICATION_WEB_CONTENTS_DESTROYED);
WebContentsDestroyed(content::Source<WebContents>(source).ptr());
}
void TabContentsContainerGtk::WebContentsDestroyed(WebContents* contents) {
// Sometimes, a WebContents is destroyed before we know about it. This allows
// us to clean up our state in case this happens.
if (preview_ && contents == preview_->tab_contents())
PopPreview();
else if (tab_ && contents == tab_->tab_contents())
SetTab(NULL);
else
NOTREACHED();
}
// Prevent |preview_| from getting focus via the tab key. If |tab_| exists, try
// to focus that. Otherwise, do nothing, but stop event propagation. See bug
// http://crbug.com/63365
gboolean TabContentsContainerGtk::OnFocus(GtkWidget* widget,
GtkDirectionType focus) {
if (preview_) {
gtk_widget_child_focus(tab_->tab_contents()->GetContentNativeView(), focus);
return TRUE;
}
// No preview contents; let the default handler run.
return FALSE;
}
// -----------------------------------------------------------------------------
// ViewIDUtil::Delegate implementation
GtkWidget* TabContentsContainerGtk::GetWidgetForViewID(ViewID view_id) {
if (view_id == VIEW_ID_TAB_CONTAINER ||
view_id == VIEW_ID_TAB_CONTAINER_FOCUS_VIEW) {
return widget();
}
return NULL;
}
// -----------------------------------------------------------------------------
// static
void TabContentsContainerGtk::OnSetFloatingPosition(
GtkFloatingContainer* floating_container, GtkAllocation* allocation,
TabContentsContainerGtk* tab_contents_container) {
StatusBubbleGtk* status = tab_contents_container->status_bubble_;
// Look at the size request of the status bubble and tell the
// GtkFloatingContainer where we want it positioned.
GtkRequisition requisition;
gtk_widget_size_request(status->widget(), &requisition);
bool ltr = !base::i18n::IsRTL();
GValue value = { 0, };
g_value_init(&value, G_TYPE_INT);
if (ltr ^ status->flip_horizontally()) // Is it on the left?
g_value_set_int(&value, 0);
else
g_value_set_int(&value, allocation->width - requisition.width);
gtk_container_child_set_property(GTK_CONTAINER(floating_container),
status->widget(), "x", &value);
int child_y = std::max(allocation->height - requisition.height, 0);
g_value_set_int(&value, child_y + status->y_offset());
gtk_container_child_set_property(GTK_CONTAINER(floating_container),
status->widget(), "y", &value);
g_value_unset(&value);
}
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