| // 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. |
| |
| #ifndef CHROME_BROWSER_UI_VIEWS_FIND_BAR_HOST_H_ |
| #define CHROME_BROWSER_UI_VIEWS_FIND_BAR_HOST_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "chrome/browser/ui/find_bar/find_bar.h" |
| #include "chrome/browser/ui/views/dropdown_bar_host.h" |
| #include "chrome/browser/ui/views/find_bar_view.h" |
| #include "ui/gfx/geometry/rect.h" |
| #include "ui/gfx/native_widget_types.h" |
| #include "ui/views/controls/textfield/textfield.h" |
| |
| class BrowserView; |
| class FindBarController; |
| class FindInPageTest; |
| |
| namespace find_in_page { |
| class FindNotificationDetails; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // |
| // The FindBarHost implements the container widget for the |
| // find-in-page functionality. It uses the implementation from |
| // find_bar_host_aura.cc to draw its content and is responsible for showing, |
| // hiding, closing, and moving the widget if needed, for example if the widget |
| // is obscuring the selection results. It also receives notifications about the |
| // search results and communicates that to the view. |
| // |
| // There is one FindBarHost per BrowserView, and its state is updated |
| // whenever the selected Tab is changed. The FindBarHost is created when |
| // the BrowserView is attached to the frame's Widget for the first time. |
| // |
| //////////////////////////////////////////////////////////////////////////////// |
| class FindBarHost : public DropdownBarHost, |
| public FindBar, |
| public FindBarTesting { |
| public: |
| explicit FindBarHost(BrowserView* browser_view); |
| ~FindBarHost() override; |
| |
| // Forwards selected key events to the renderer. This is useful to make sure |
| // that arrow keys and PageUp and PageDown result in scrolling, instead of |
| // being eaten because the FindBar has focus. Returns true if the keystroke |
| // was forwarded, false if not. |
| bool MaybeForwardKeyEventToWebpage(const ui::KeyEvent& key_event); |
| |
| // FindBar implementation: |
| FindBarController* GetFindBarController() const override; |
| void SetFindBarController(FindBarController* find_bar_controller) override; |
| void Show(bool animate) override; |
| void Hide(bool animate) override; |
| void SetFocusAndSelection() override; |
| void ClearResults( |
| const find_in_page::FindNotificationDetails& results) override; |
| void StopAnimation() override; |
| void MoveWindowIfNecessary() override; |
| void SetFindTextAndSelectedRange(const base::string16& find_text, |
| const gfx::Range& selected_range) override; |
| base::string16 GetFindText() const override; |
| gfx::Range GetSelectedRange() const override; |
| void UpdateUIForFindResult( |
| const find_in_page::FindNotificationDetails& result, |
| const base::string16& find_text) override; |
| void AudibleAlert() override; |
| bool IsFindBarVisible() const override; |
| void RestoreSavedFocus() override; |
| bool HasGlobalFindPasteboard() const override; |
| void UpdateFindBarForChangedWebContents() override; |
| const FindBarTesting* GetFindBarTesting() const override; |
| |
| // Overridden from ui::AcceleratorTarget in DropdownBarHost class: |
| bool AcceleratorPressed(const ui::Accelerator& accelerator) override; |
| bool CanHandleAccelerators() const override; |
| |
| // FindBarTesting implementation: |
| bool GetFindBarWindowInfo(gfx::Point* position, |
| bool* fully_visible) const override; |
| base::string16 GetFindSelectedText() const override; |
| base::string16 GetMatchCountText() const override; |
| int GetContentsWidth() const override; |
| size_t GetAudibleAlertCount() const override; |
| |
| // Overridden from DropdownBarHost: |
| // Returns the rectangle representing where to position the find bar. It uses |
| // GetDialogBounds and positions itself within that, either to the left (if an |
| // InfoBar is present) or to the right (no InfoBar). If |
| // |avoid_overlapping_rect| is specified, the return value will be a rectangle |
| // located immediately to the left of |avoid_overlapping_rect|, as long as |
| // there is enough room for the dialog to draw within the bounds. If not, the |
| // dialog position returned will overlap |avoid_overlapping_rect|. |
| // Note: |avoid_overlapping_rect| is expected to use coordinates relative to |
| // the top of the page area, (it will be converted to coordinates relative to |
| // the top of the browser window, when comparing against the dialog |
| // coordinates). The returned value is relative to the browser window. |
| gfx::Rect GetDialogPosition(gfx::Rect avoid_overlapping_rect) override; |
| // Moves the dialog window to the provided location, moves it to top in the |
| // z-order (HWND_TOP, not HWND_TOPMOST) and shows the window (if hidden). |
| // It then calls UpdateWindowEdges to make sure we don't overwrite the Chrome |
| // window border. |
| void SetDialogPosition(const gfx::Rect& new_pos) override; |
| |
| // Retrieves the boundaries that the find bar widget has to work with |
| // within the Chrome frame window. The resulting rectangle will be a |
| // rectangle that overlaps the bottom of the Chrome toolbar by one |
| // pixel (so we can create the illusion that the dropdown widget is |
| // part of the toolbar) and covers the page area, except that we |
| // deflate the rect width by subtracting (from both sides) the width |
| // of the toolbar and some extra pixels to account for the width of |
| // the Chrome window borders. |bounds| is relative to the browser |
| // window. If the function fails to determine the browser |
| // window/client area rectangle or the rectangle for the page area |
| // then |bounds| will be an empty rectangle. |
| void GetWidgetBounds(gfx::Rect* bounds) override; |
| |
| // Additional accelerator handling (on top of what DropDownBarHost does). |
| void RegisterAccelerators() override; |
| void UnregisterAccelerators() override; |
| |
| protected: |
| // Overridden from DropdownBarHost: |
| void OnVisibilityChanged() override; |
| |
| // views::WidgetDelegate: |
| ax::mojom::Role GetAccessibleWindowRole() override; |
| base::string16 GetAccessibleWindowTitle() const override; |
| |
| private: |
| friend class FindInPageTest; |
| |
| // Allows implementation to tweak widget position. |
| void GetWidgetPositionNative(gfx::Rect* avoid_overlapping_rect); |
| |
| // If the find bar obscures the search results we need to move the window. To |
| // do that we need to know what is selected on the page. We simply calculate |
| // where it would be if we place it on the left of the selection and if it |
| // doesn't fit on the screen we try the right side. The parameter |
| // |selection_rect| is expected to have coordinates relative to the top of |
| // the web page area. |
| void MoveWindowIfNecessaryWithRect(const gfx::Rect& selection_rect); |
| |
| // Returns the FindBarView. |
| FindBarView* find_bar_view() { return static_cast<FindBarView*>(view()); } |
| const FindBarView* find_bar_view() const { |
| return static_cast<const FindBarView*>(view()); |
| } |
| |
| // A pointer back to the owning controller. |
| FindBarController* find_bar_controller_ = nullptr; |
| |
| // The number of audible alerts issued. |
| size_t audible_alerts_ = 0; |
| |
| DISALLOW_COPY_AND_ASSIGN(FindBarHost); |
| }; |
| |
| #endif // CHROME_BROWSER_UI_VIEWS_FIND_BAR_HOST_H_ |