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// Copyright (c) 2009 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_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_
#define CHROME_BROWSER_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_
#import <Cocoa/Cocoa.h>
@class AutocompleteTextFieldCell;
// AutocompleteTextField intercepts UI actions for forwarding to
// AutocompleteEditViewMac (*), and provides a custom look. It works
// together with AutocompleteTextFieldEditor (mostly for intercepting
// user actions) and AutocompleteTextFieldCell (mostly for custom
// drawing).
//
// For historical reasons, chrome/browser/autocomplete is the core
// implementation of the Omnibox. Chrome code seems to vary between
// autocomplete and Omnibox in describing this.
//
// (*) AutocompleteEditViewMac is a view in the MVC sense for the
// Chrome internals, though it's really more of a mish-mash of model,
// view, and controller.
// Provides a hook so that we can call directly down to
// AutocompleteEditViewMac rather than traversing the delegate chain.
class AutocompleteTextFieldObserver {
public:
// Called when the control-key state changes while the field is
// first responder.
virtual void OnControlKeyChanged(bool pressed) = 0;
// Called when the user pastes into the field.
virtual void OnPaste() = 0;
// Returns true if the current clipboard text supports paste and go
// (or paste and search).
virtual bool CanPasteAndGo() = 0;
// Returns the appropriate "Paste and Go" or "Paste and Search"
// context menu string, depending on what is currently in the
// clipboard. Must not be called unless CanPasteAndGo() returns
// true.
virtual int GetPasteActionStringId() = 0;
// Called when the user initiates a "paste and go" or "paste and
// search" into |field_|.
virtual void OnPasteAndGo() = 0;
// Called when the user clicks the hint icon (i.e. the security icon) in the
// location bar.
virtual void OnSecurityIconClicked() = 0;
// Called when the field's frame changes.
virtual void OnFrameChanged() = 0;
};
@interface AutocompleteTextField : NSTextField {
@private
AutocompleteTextFieldObserver* observer_; // weak, owned by location bar.
}
@property AutocompleteTextFieldObserver* observer;
// Convenience method to return the cell, casted appropriately.
- (AutocompleteTextFieldCell*)autocompleteTextFieldCell;
// If the keyword, keyword hint, or search hint changed, then the
// field editor may need to be repositioned.
- (void)resetFieldEditorFrameIfNeeded;
// Returns the amount of the field's width which is not being taken up
// by the text contents. May be negative if the contents are large
// enough to scroll.
- (CGFloat)availableDecorationWidth;
// Superclass aborts editing before changing the string, which causes
// problems for undo. This version modifies the field editor's
// contents if the control is already being edited.
- (void)setAttributedStringValue:(NSAttributedString*)aString;
@end
#endif // CHROME_BROWSER_COCOA_AUTOCOMPLETE_TEXT_FIELD_H_
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