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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_BROWSER_VIEWS_STAR_TOGGLE_H__
#define CHROME_BROWSER_VIEWS_STAR_TOGGLE_H__
#include "chrome/views/view.h"
#include "chrome/views/event.h"
////////////////////////////////////////////////////////////////////////////////
//
// A view subclass to implement the star button. The star button notifies its
// Delegate when the state changes.
//
////////////////////////////////////////////////////////////////////////////////
class StarToggle : public ChromeViews::View {
public:
class Delegate {
public:
// Called when the star is toggled.
virtual void StarStateChanged(bool state) = 0;
};
explicit StarToggle(Delegate* delegate);
virtual ~StarToggle();
// Set whether the star is checked.
void SetState(bool s);
bool GetState() const;
// If true (the default) the state is immediately changed on a mouse release.
// If false, on mouse release the delegate is notified, but the state is not
// changed.
void set_change_state_immediately(bool value) {
change_state_immediately_ = value;
}
// Check/uncheck the star.
void SwitchState();
// Overriden from view.
void Paint(ChromeCanvas* canvas);
void GetPreferredSize(CSize* out);
virtual bool OnMousePressed(const ChromeViews::MouseEvent& e);
virtual bool OnMouseDragged(const ChromeViews::MouseEvent& event);
virtual void OnMouseReleased(const ChromeViews::MouseEvent& e, bool canceled);
bool OnKeyPressed(const ChromeViews::KeyEvent& e);
private:
// The state.
bool state_;
// Our bitmap.
SkBitmap* state_off_;
SkBitmap* state_on_;
// Parent to be notified.
Delegate* delegate_;
// See note in setter.
bool change_state_immediately_;
DISALLOW_EVIL_CONSTRUCTORS(StarToggle);
};
#endif // CHROME_BROWSER_VIEWS_STAR_TOGGLE_H__
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