| // Copyright (c) 2012 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 "components/constrained_window/constrained_window_views.h" |
| |
| #include <algorithm> |
| |
| #include "base/macros.h" |
| #include "build/build_config.h" |
| #include "components/constrained_window/constrained_window_views_client.h" |
| #include "components/guest_view/browser/guest_view_base.h" |
| #include "components/web_modal/web_contents_modal_dialog_host.h" |
| #include "components/web_modal/web_contents_modal_dialog_manager.h" |
| #include "components/web_modal/web_contents_modal_dialog_manager_delegate.h" |
| #include "ui/display/display.h" |
| #include "ui/display/screen.h" |
| #include "ui/views/border.h" |
| #include "ui/views/widget/widget.h" |
| #include "ui/views/widget/widget_observer.h" |
| #include "ui/views/window/dialog_delegate.h" |
| |
| #if defined(OS_MACOSX) |
| #import "components/constrained_window/native_web_contents_modal_dialog_manager_views_mac.h" |
| #endif |
| |
| #if defined(USE_AURA) |
| #include "ui/aura/window.h" |
| #include "ui/compositor/dip_util.h" |
| #endif |
| |
| using web_modal::ModalDialogHost; |
| using web_modal::ModalDialogHostObserver; |
| |
| namespace constrained_window { |
| namespace { |
| |
| ConstrainedWindowViewsClient* constrained_window_views_client = nullptr; |
| |
| // The name of a key to store on the window handle to associate |
| // WidgetModalDialogHostObserverViews with the Widget. |
| const char* const kWidgetModalDialogHostObserverViewsKey = |
| "__WIDGET_MODAL_DIALOG_HOST_OBSERVER_VIEWS__"; |
| |
| // Applies positioning changes from the ModalDialogHost to the Widget. |
| class WidgetModalDialogHostObserverViews |
| : public views::WidgetObserver, |
| public ModalDialogHostObserver { |
| public: |
| WidgetModalDialogHostObserverViews(ModalDialogHost* host, |
| views::Widget* target_widget, |
| const char *const native_window_property) |
| : host_(host), |
| target_widget_(target_widget), |
| native_window_property_(native_window_property) { |
| DCHECK(host_); |
| DCHECK(target_widget_); |
| host_->AddObserver(this); |
| target_widget_->AddObserver(this); |
| } |
| |
| ~WidgetModalDialogHostObserverViews() override { |
| if (host_) |
| host_->RemoveObserver(this); |
| target_widget_->RemoveObserver(this); |
| target_widget_->SetNativeWindowProperty(native_window_property_, nullptr); |
| } |
| |
| // WidgetObserver overrides |
| void OnWidgetDestroying(views::Widget* widget) override { delete this; } |
| |
| // WebContentsModalDialogHostObserver overrides |
| void OnPositionRequiresUpdate() override { |
| UpdateWidgetModalDialogPosition(target_widget_, host_); |
| } |
| |
| void OnHostDestroying() override { |
| host_->RemoveObserver(this); |
| host_ = nullptr; |
| } |
| |
| private: |
| ModalDialogHost* host_; |
| views::Widget* target_widget_; |
| const char* const native_window_property_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WidgetModalDialogHostObserverViews); |
| }; |
| |
| void UpdateModalDialogPosition(views::Widget* widget, |
| web_modal::ModalDialogHost* dialog_host, |
| const gfx::Size& size) { |
| // Do not forcibly update the dialog widget position if it is being dragged. |
| if (widget->HasCapture()) |
| return; |
| |
| views::Widget* host_widget = |
| views::Widget::GetWidgetForNativeView(dialog_host->GetHostView()); |
| |
| // If the host view is not backed by a Views::Widget, just update the widget |
| // size. This can happen on MacViews under the Cocoa browser where the window |
| // modal dialogs are displayed as sheets, and their position is managed by a |
| // ConstrainedWindowSheetController instance. |
| if (!host_widget) { |
| widget->SetSize(size); |
| return; |
| } |
| |
| gfx::Point position = dialog_host->GetDialogPosition(size); |
| views::Border* border = widget->non_client_view()->frame_view()->border(); |
| // Border may be null during widget initialization. |
| if (border) { |
| // Align the first row of pixels inside the border. This is the apparent |
| // top of the dialog. |
| position.set_y(position.y() - border->GetInsets().top()); |
| } |
| |
| if (widget->is_top_level()) { |
| position += host_widget->GetClientAreaBoundsInScreen().OffsetFromOrigin(); |
| // If the dialog extends partially off any display, clamp its position to |
| // be fully visible within that display. If the dialog doesn't intersect |
| // with any display clamp its position to be fully on the nearest display. |
| gfx::Rect display_rect = gfx::Rect(position, size); |
| const display::Display display = |
| display::Screen::GetScreen()->GetDisplayNearestView( |
| dialog_host->GetHostView()); |
| const gfx::Rect work_area = display.work_area(); |
| if (!work_area.Contains(display_rect)) |
| display_rect.AdjustToFit(work_area); |
| position = display_rect.origin(); |
| } |
| |
| widget->SetBounds(gfx::Rect(position, size)); |
| |
| #if defined(USE_AURA) |
| if (!widget->is_top_level()) { |
| // Toplevel windows are automatiacally snapped, but CHILD windows |
| // may not. If it's not toplevel, snap the widget's layer to pixel |
| // based on the parent toplevel window, which should be snapped. |
| gfx::NativeView window = widget->GetNativeView(); |
| views::Widget* toplevel = |
| views::Widget::GetTopLevelWidgetForNativeView(window->parent()); |
| ui::SnapLayerToPhysicalPixelBoundary(toplevel->GetLayer(), |
| widget->GetLayer()); |
| } |
| #endif |
| } |
| |
| } // namespace |
| |
| // static |
| void SetConstrainedWindowViewsClient( |
| std::unique_ptr<ConstrainedWindowViewsClient> new_client) { |
| delete constrained_window_views_client; |
| constrained_window_views_client = new_client.release(); |
| } |
| |
| void UpdateWebContentsModalDialogPosition( |
| views::Widget* widget, |
| web_modal::WebContentsModalDialogHost* dialog_host) { |
| gfx::Size size = widget->GetRootView()->GetPreferredSize(); |
| gfx::Size max_size = dialog_host->GetMaximumDialogSize(); |
| // Enlarge the max size by the top border, as the dialog will be shifted |
| // outside the area specified by the dialog host by this amount later. |
| views::Border* border = |
| widget->non_client_view()->frame_view()->border(); |
| // Border may be null during widget initialization. |
| if (border) |
| max_size.Enlarge(0, border->GetInsets().top()); |
| size.SetToMin(max_size); |
| UpdateModalDialogPosition(widget, dialog_host, size); |
| } |
| |
| void UpdateWidgetModalDialogPosition(views::Widget* widget, |
| web_modal::ModalDialogHost* dialog_host) { |
| UpdateModalDialogPosition(widget, dialog_host, |
| widget->GetRootView()->GetPreferredSize()); |
| } |
| |
| content::WebContents* GetTopLevelWebContents( |
| content::WebContents* initiator_web_contents) { |
| return guest_view::GuestViewBase::GetTopLevelWebContents( |
| initiator_web_contents); |
| } |
| |
| views::Widget* ShowWebModalDialogViews( |
| views::WidgetDelegate* dialog, |
| content::WebContents* initiator_web_contents) { |
| DCHECK(constrained_window_views_client); |
| // For embedded WebContents, use the embedder's WebContents for constrained |
| // window. |
| content::WebContents* web_contents = |
| GetTopLevelWebContents(initiator_web_contents); |
| views::Widget* widget = CreateWebModalDialogViews(dialog, web_contents); |
| ShowModalDialog(widget->GetNativeWindow(), web_contents); |
| return widget; |
| } |
| |
| #if defined(OS_MACOSX) |
| views::Widget* ShowWebModalDialogWithOverlayViews( |
| views::WidgetDelegate* dialog, |
| content::WebContents* initiator_web_contents) { |
| DCHECK(constrained_window_views_client); |
| // For embedded WebContents, use the embedder's WebContents for constrained |
| // window. |
| content::WebContents* web_contents = |
| GetTopLevelWebContents(initiator_web_contents); |
| views::Widget* widget = CreateWebModalDialogViews(dialog, web_contents); |
| web_modal::WebContentsModalDialogManager* manager = |
| web_modal::WebContentsModalDialogManager::FromWebContents(web_contents); |
| std::unique_ptr<web_modal::SingleWebContentsDialogManager> dialog_manager( |
| new NativeWebContentsModalDialogManagerViewsMac(widget->GetNativeWindow(), |
| manager)); |
| manager->ShowDialogWithManager(widget->GetNativeWindow(), |
| std::move(dialog_manager)); |
| return widget; |
| } |
| #endif |
| |
| views::Widget* CreateWebModalDialogViews(views::WidgetDelegate* dialog, |
| content::WebContents* web_contents) { |
| DCHECK_EQ(ui::MODAL_TYPE_CHILD, dialog->GetModalType()); |
| return views::DialogDelegate::CreateDialogWidget( |
| dialog, nullptr, |
| web_modal::WebContentsModalDialogManager::FromWebContents(web_contents) |
| ->delegate() |
| ->GetWebContentsModalDialogHost() |
| ->GetHostView()); |
| } |
| |
| views::Widget* CreateBrowserModalDialogViews(views::DialogDelegate* dialog, |
| gfx::NativeWindow parent) { |
| DCHECK_NE(ui::MODAL_TYPE_CHILD, dialog->GetModalType()); |
| DCHECK_NE(ui::MODAL_TYPE_NONE, dialog->GetModalType()); |
| DCHECK(!parent || constrained_window_views_client); |
| |
| gfx::NativeView parent_view = |
| parent ? constrained_window_views_client->GetDialogHostView(parent) |
| : nullptr; |
| views::Widget* widget = |
| views::DialogDelegate::CreateDialogWidget(dialog, nullptr, parent_view); |
| |
| bool requires_positioning = dialog->ShouldUseCustomFrame(); |
| |
| #if defined(OS_MACOSX) |
| // On Mac, window modal dialogs are displayed as sheets, so their position is |
| // managed by the parent window. |
| requires_positioning = false; |
| #endif |
| |
| if (!requires_positioning) |
| return widget; |
| |
| ModalDialogHost* host = |
| parent ? constrained_window_views_client->GetModalDialogHost(parent) |
| : nullptr; |
| if (host) { |
| DCHECK_EQ(parent_view, host->GetHostView()); |
| ModalDialogHostObserver* dialog_host_observer = |
| new WidgetModalDialogHostObserverViews( |
| host, widget, kWidgetModalDialogHostObserverViewsKey); |
| dialog_host_observer->OnPositionRequiresUpdate(); |
| } |
| return widget; |
| } |
| |
| } // namespace constrained window |