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// Copyright (c) 2006-2008 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_VIEWS_INFO_BAR_ITEM_VIEW_H__
#define CHROME_BROWSER_VIEWS_INFO_BAR_ITEM_VIEW_H__
#include "chrome/browser/views/info_bar_view.h"
#include "chrome/common/slide_animation.h"
#include "chrome/views/button.h"
namespace ChromeViews {
class ExternalFocusTracker;
class ImageView;
}
// Note: An InfoBarItemView must be added as a child of InfoBarView to be
// displayed correctly.
//
// InfoBarItemView is basically a view container that lays out views in a
// horizontal row, on either the left or the right, with specified padding. It
// has a close button on the far right, which can't be removed, and closes the
// info bar by default. An icon can be set to be displayed leading all other
// views by calling SetIcon().
//
// A view can be added to either the left or the right of the info bar by
// calling AddChildViewTrailing and AddChildViewLeading.
//
// The most recently added views to either side will always be located further
// towards the center than views added less recently, with the first views added
// to the left or right being located on the leftmost or rightmost sides of the
// info bar, respectively. Each view has a default spacing from the next
// view added to that side, but you can edit that by specifying a padding when
// you add a view. For example, if you add a view to the left with a padding of
// 6 specified, it will be placed in the leftmost position, and the next view
// added to the left will be 6 pixels to the right of the previously added view.
class InfoBarItemView : public ChromeViews::View,
public ChromeViews::BaseButton::ButtonListener,
public AnimationDelegate {
public:
InfoBarItemView();
virtual ~InfoBarItemView();
// The preferred height is equal to the maximum height of all views
// in the info bar. Preferred width is equal to the parents width.
virtual gfx::Size GetPreferredSize();
// Lays out all child views of the info bar from trailing to leading.
virtual void Layout();
virtual void DidChangeBounds(const gfx::Rect& previous,
const gfx::Rect& current);
// Starts the close animation, which will end in the bar closing itself.
void BeginClose();
// Removes this InfoBarItem from its parent view and then deletes it.
void Close();
// ButtonListener Method
// Calls CloseButtonPressed() when the close button is pressed
virtual void ButtonPressed(ChromeViews::BaseButton* button);
// Adds |view| to the info bar, directly leading the last trailing view
// added, according to that views specified padding. The next trailing view
// added will in turn be leading this view by |leading_padding| pixels.
// Specify 0 for |leading_padding| if the views should be flush.
void AddChildViewTrailing(ChromeViews::View* view, int leading_padding);
// Calls AddChildViewTrailing with a default amount of padding.
void AddChildViewTrailing(ChromeViews::View* view);
// Adds |view| to the info bar, directly trailing the last leading view
// added, according to that views specified padding. The next leading view
// added will in turn be trailing this view by |trailing_padding| pixels.
// Specify 0 for |trailing_padding| if the views should be flush.
void AddChildViewLeading(ChromeViews::View* view, int trailing_padding);
// Calls AddChildViewLeading with a default amount of padding.
void AddChildViewLeading(ChromeViews::View* view);
// Sets the icon to be displayed leading all other views in the info bar.
// The icon will be displayed at its images height and width by default.
void SetIcon(const SkBitmap& icon);
protected:
// Returns the desired position for a centered object of size |size| within
// a region of size |target_size|.
static int CenterPosition(int size, int target_size);
virtual void ViewHierarchyChanged(bool is_add, View *parent, View *child);
// Overridden from the basic Views AddChildView. Calls
// AddChildViewTrailing(view)
virtual void AddChildView(ChromeViews::View* view);
// Overridden from basic View. Adds the view to the same side as the view
// at index. Does *not* insert at the specified index, or even neccesarily
// close to it.
virtual void AddChildView(int index, ChromeViews::View* view);
// Overridden from the basic Views AddChildView, removes the specified view
// as well as its padding.
virtual void RemoveChildView(ChromeViews::View* view);
// Invoked whenever the close button is pressed. Closes infobar by default.
virtual void CloseButtonPressed();
private:
// Creates cancel button.
void Init();
// SlideAnimationDelegate implementation.
virtual void AnimationProgressed(const Animation* animation);
virtual void AnimationEnded(const Animation* animation);
scoped_ptr<SlideAnimation> animation_;
// View index where all new views will be inserted. Any view at an index less
// than insert_index will be laid out will be leading views (left aligned in
// left to right languages), any view greater than or equal to insert_index_
// will be laid out trailing (right aligned in left to right languages).
int insert_index_;
// Dismisses the info bar by default.
ChromeViews::Button* close_button_;
// Optional icon to be displayed at the far left of the infobar.
ChromeViews::ImageView* icon_;
// Tracks and stores the last focused view which is not the InfoBarItemView or
// any of its children. Used to restore focus once the InfoBarItemView is
// closed.
scoped_ptr<ChromeViews::ExternalFocusTracker> focus_tracker_;
DISALLOW_EVIL_CONSTRUCTORS(InfoBarItemView);
};
#endif // CHROME_BROWSER_VIEWS_INFO_BAR_ITEM_VIEW_H__
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