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// Copyright (c) 2010 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_FIND_BAR_CONTROLLER_H_
#define CHROME_BROWSER_FIND_BAR_CONTROLLER_H_
#pragma once
#include "base/basictypes.h"
#include "base/scoped_ptr.h"
#include "chrome/common/notification_observer.h"
#include "chrome/common/notification_registrar.h"
namespace gfx {
class Rect;
}
class FindBar;
class TabContents;
class FindBarController : public NotificationObserver {
public:
// An enum listing the possible actions to take on a find-in-page selection.
enum SelectionAction {
kKeepSelection, // Translate the find selection into a normal selection.
kClearSelection, // Clear the find selection.
kActivateSelection // Focus and click the selected node (for links).
};
// FindBar takes ownership of |find_bar_view|.
explicit FindBarController(FindBar* find_bar);
virtual ~FindBarController();
// Shows the find bar. Any previous search string will again be visible.
void Show();
// Ends the current session.
void EndFindSession(SelectionAction action);
// Accessor for the attached TabContents.
TabContents* tab_contents() const { return tab_contents_; }
// Changes the TabContents that this FindBar is attached to. This occurs when
// the user switches tabs in the Browser window. |contents| can be NULL.
void ChangeTabContents(TabContents* contents);
// Overridden from NotificationObserver:
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
FindBar* find_bar() const { return find_bar_.get(); }
// Reposition |view_location| such that it avoids |avoid_overlapping_rect|,
// and return the new location.
static gfx::Rect GetLocationForFindbarView(
gfx::Rect view_location,
const gfx::Rect& dialog_bounds,
const gfx::Rect& avoid_overlapping_rect);
private:
// Sents an update to the find bar with the tab contents' current result. The
// tab_contents_ must be non-NULL before this call. Theis handles
// de-flickering in addition to just calling the update function.
void UpdateFindBarForCurrentResult();
// For Windows and Linux this function sets the prepopulate text for the
// Find text box. The propopulate value is the last value the user searched
// for in the current tab, or (if blank) the last value searched for in any
// tab. Mac has a global value for search, so this function does nothing on
// Mac.
void MaybeSetPrepopulateText();
NotificationRegistrar registrar_;
scoped_ptr<FindBar> find_bar_;
// The TabContents we are currently associated with. Can be NULL.
TabContents* tab_contents_;
// The last match count we reported to the user. This is used by
// UpdateFindBarForCurrentResult to avoid flickering.
int last_reported_matchcount_;
DISALLOW_COPY_AND_ASSIGN(FindBarController);
};
#endif // CHROME_BROWSER_FIND_BAR_CONTROLLER_H_
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