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// 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_VIEW_H_
#define CHROME_BROWSER_UI_VIEWS_FIND_BAR_VIEW_H_
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string16.h"
#include "chrome/browser/ui/views/dropdown_bar_view.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/textfield/textfield.h"
#include "ui/views/controls/textfield/textfield_controller.h"
class FindBarHost;
class FindNotificationDetails;
namespace views {
class ImageButton;
class Label;
class MouseEvent;
class Painter;
}
////////////////////////////////////////////////////////////////////////////////
//
// The FindBarView is responsible for drawing the UI controls of the
// FindBar, the find text box, the 'Find' button and the 'Close'
// button. It communicates the user search words to the FindBarHost.
//
////////////////////////////////////////////////////////////////////////////////
class FindBarView : public DropdownBarView,
public views::ButtonListener,
public views::TextfieldController {
public:
// A tag denoting which button the user pressed.
enum ButtonTag {
FIND_PREVIOUS_TAG = 0, // The Find Previous button.
FIND_NEXT_TAG, // The Find Next button.
CLOSE_TAG, // The Close button (the 'X').
};
explicit FindBarView(FindBarHost* host);
~FindBarView() override;
// Accessors for the text and selection displayed in the text box.
void SetFindTextAndSelectedRange(const base::string16& find_text,
const gfx::Range& selected_range);
base::string16 GetFindText() const;
gfx::Range GetSelectedRange() const;
// Gets the selected text in the text box.
base::string16 GetFindSelectedText() const;
// Gets the match count text displayed in the text box.
base::string16 GetMatchCountText() const;
// Updates the label inside the Find text box that shows the ordinal of the
// active item and how many matches were found.
void UpdateForResult(const FindNotificationDetails& result,
const base::string16& find_text);
// Clears the current Match Count value in the Find text box.
void ClearMatchCount();
// Claims focus for the text field and selects its contents.
void SetFocusAndSelection(bool select_all) override;
// views::View:
void OnPaint(gfx::Canvas* canvas) override;
void Layout() override;
gfx::Size GetPreferredSize() const override;
// views::ButtonListener:
void ButtonPressed(views::Button* sender, const ui::Event& event) override;
// views::TextfieldController:
bool HandleKeyEvent(views::Textfield* sender,
const ui::KeyEvent& key_event) override;
void OnAfterUserAction(views::Textfield* sender) override;
void OnAfterPaste() override;
private:
// Starts finding |search_text|. If the text is empty, stops finding.
void Find(const base::string16& search_text);
// Updates the appearance for the match count label.
void UpdateMatchCountAppearance(bool no_match);
// views::View:
void OnThemeChanged() override;
// We use a hidden view to grab mouse clicks and bring focus to the find
// text box. This is because although the find text box may look like it
// extends all the way to the find button, it only goes as far as to the
// match_count label. The user, however, expects being able to click anywhere
// inside what looks like the find text box (including on or around the
// match_count label) and have focus brought to the find box.
class FocusForwarderView : public views::View {
public:
explicit FocusForwarderView(
views::Textfield* view_to_focus_on_mousedown)
: view_to_focus_on_mousedown_(view_to_focus_on_mousedown) {}
private:
bool OnMousePressed(const ui::MouseEvent& event) override;
views::Textfield* view_to_focus_on_mousedown_;
DISALLOW_COPY_AND_ASSIGN(FocusForwarderView);
};
// Returns the OS-specific view for the find bar that acts as an intermediary
// between us and the WebContentsView.
FindBarHost* find_bar_host() const;
// Used to detect if the input text, not including the IME composition text,
// has changed or not.
base::string16 last_searched_text_;
// The controls in the window.
views::Textfield* find_text_;
scoped_ptr<views::Painter> find_text_border_;
views::Label* match_count_text_;
FocusForwarderView* focus_forwarder_view_;
views::ImageButton* find_previous_button_;
views::ImageButton* find_next_button_;
views::ImageButton* close_button_;
// The preferred height of the find bar.
int preferred_height_;
DISALLOW_COPY_AND_ASSIGN(FindBarView);
};
#endif // CHROME_BROWSER_UI_VIEWS_FIND_BAR_VIEW_H_
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