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| author | brettw@chromium.org <brettw@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-06-24 21:22:40 +0000 |
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| committer | brettw@chromium.org <brettw@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-06-24 21:22:40 +0000 |
| commit | d72dc0441d9bd4575d1cca121cfe22a7dea86ade (patch) | |
| tree | e436cce1817a75daf7b4d29403adc24aa0c7beea /content/browser/accessibility/browser_accessibility.h | |
| parent | 47d2fb25ee2c3fda74aa6992512bc63825fb88e3 (diff) | |
| download | chromium_src-d72dc0441d9bd4575d1cca121cfe22a7dea86ade.zip chromium_src-d72dc0441d9bd4575d1cca121cfe22a7dea86ade.tar.gz chromium_src-d72dc0441d9bd4575d1cca121cfe22a7dea86ade.tar.bz2 | |
Revert 90435 - Re-land: Move browser accessibility code from chrome to content.
This caused a legitimate check deps failure
er/accessibility/browser_accessibility_cocoa.mm depending on ui/base/l10n
BUG=85932
TEST=none
Review URL: http://codereview.chromium.org/7233022
TBR=dmazzoni@chromium.org
Review URL: http://codereview.chromium.org/7235008
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@90438 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'content/browser/accessibility/browser_accessibility.h')
| -rw-r--r-- | content/browser/accessibility/browser_accessibility.h | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/content/browser/accessibility/browser_accessibility.h b/content/browser/accessibility/browser_accessibility.h deleted file mode 100644 index dbd3e13..0000000 --- a/content/browser/accessibility/browser_accessibility.h +++ /dev/null @@ -1,227 +0,0 @@ -// Copyright (c) 2011 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 CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ -#define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ -#pragma once - -#include <map> -#include <utility> -#include <vector> - -#include "base/basictypes.h" -#include "build/build_config.h" -#include "webkit/glue/webaccessibility.h" - -class BrowserAccessibilityManager; -#if defined(OS_MACOSX) && __OBJC__ -@class BrowserAccessibilityCocoa; -#elif defined(OS_WIN) -class BrowserAccessibilityWin; -#endif - -using webkit_glue::WebAccessibility; - -//////////////////////////////////////////////////////////////////////////////// -// -// BrowserAccessibility -// -// Class implementing the cross platform interface for the Browser-Renderer -// communication of accessibility information, providing accessibility -// to be used by screen readers and other assistive technology (AT). -// -// An implementation for each platform handles platform specific accessibility -// APIs. -// -//////////////////////////////////////////////////////////////////////////////// -class BrowserAccessibility { - public: - // Creates a platform specific BrowserAccessibility. Ownership passes to the - // caller. - static BrowserAccessibility* Create(); - - virtual ~BrowserAccessibility(); - - // Detach all descendants of this subtree and push all of the node pointers, - // including this node, onto the end of |nodes|. - virtual void DetachTree(std::vector<BrowserAccessibility*>* nodes); - - // Perform platform specific initialization. This can be called multiple times - // during the lifetime of this instance after the members of this base object - // have been reset with new values from the renderer process. - virtual void Initialize(); - - // Initialize this object, reading attributes from |src|. Does not - // recurse into children of |src| and build the whole subtree. - void Initialize(BrowserAccessibilityManager* manager, - BrowserAccessibility* parent, - int32 child_id, - int32 index_in_parent, - const WebAccessibility& src); - - // Add a child of this object. - void AddChild(BrowserAccessibility* child); - - // Update the parent and index in parent if this node has been moved. - void UpdateParent(BrowserAccessibility* parent, int index_in_parent); - - // Return true if this object is equal to or a descendant of |ancestor|. - bool IsDescendantOf(BrowserAccessibility* ancestor); - - // Returns the parent of this object, or NULL if it's the root. - BrowserAccessibility* parent() { return parent_; } - - // Returns the number of children of this object. - uint32 child_count() const { return children_.size(); } - - // Return a pointer to the child with the given index. - BrowserAccessibility* GetChild(uint32 child_index); - - // Return the previous sibling of this object, or NULL if it's the first - // child of its parent. - BrowserAccessibility* GetPreviousSibling(); - - // Return the next sibling of this object, or NULL if it's the last child - // of its parent. - BrowserAccessibility* GetNextSibling(); - - // Returns the bounds of this object in screen coordinates. - gfx::Rect GetBoundsRect(); - - // Returns the deepest descendant that contains the specified point. - BrowserAccessibility* BrowserAccessibilityForPoint(const gfx::Point& point); - - // - // Reference counting - // - // Each object has an internal reference count and many platform - // implementations may also use native reference counting. - // - // The internal reference counting is used because sometimes - // multiple references to the same object exist temporarily during - // an update. When the internal reference count reaches zero, - // NativeReleaseReference is called. - // - // Native reference counting is used on some platforms because the - // operating system may hold onto a reference to a BrowserAccessibility - // object even after we're through with it. On these platforms, when - // the internal reference count reaches zero, instance_active is set - // to zero, and all queries on this object should return failure. - // The object isn't actually deleted until the operating system releases - // all of its references. - // - - // Increment this node's internal reference count. - virtual void InternalAddReference(); - - // Decrement this node's internal reference count. If the reference count - // reaches zero, call NativeReleaseReference(). - virtual void InternalReleaseReference(bool recursive); - - // Subclasses should override this to support platform reference counting. - virtual void NativeAddReference() { } - - // Subclasses should override this to support platform reference counting. - virtual void NativeReleaseReference(); - - // - // Accessors - // - - const std::map<int32, string16>& attributes() const { return attributes_; } - int32 child_id() const { return child_id_; } - const std::vector<BrowserAccessibility*>& children() const { - return children_; - } - const std::vector<std::pair<string16, string16> >& html_attributes() const { - return html_attributes_; - } - int32 index_in_parent() const { return index_in_parent_; } - const std::vector<int32>& indirect_child_ids() const { - return indirect_child_ids_; - } - const std::vector<int32>& line_breaks() const { - return line_breaks_; - } - gfx::Rect location() const { return location_; } - BrowserAccessibilityManager* manager() const { return manager_; } - const string16& name() const { return name_; } - int32 renderer_id() const { return renderer_id_; } - int32 role() const { return role_; } - const string16& role_name() const { return role_name_; } - int32 state() const { return state_; } - const string16& value() const { return value_; } - bool instance_active() const { return instance_active_; } - int32 ref_count() const { return ref_count_; } - -#if defined(OS_MACOSX) && __OBJC__ - BrowserAccessibilityCocoa* toBrowserAccessibilityCocoa(); -#elif defined(OS_WIN) - BrowserAccessibilityWin* toBrowserAccessibilityWin(); -#endif - - // BrowserAccessibilityCocoa needs access to these methods. - // Return true if this attribute is in the attributes map. - bool HasAttribute(WebAccessibility::Attribute attribute); - - // Retrieve the string value of an attribute from the attribute map and - // returns true if found. - bool GetAttribute(WebAccessibility::Attribute attribute, string16* value); - - // Retrieve the value of an attribute from the attribute map and - // if found and nonempty, try to convert it to an integer. - // Returns true only if both the attribute was found and it was successfully - // converted to an integer. - bool GetAttributeAsInt( - WebAccessibility::Attribute attribute, int* value_int); - - protected: - BrowserAccessibility(); - - // The manager of this tree of accessibility objects; needed for - // global operations like focus tracking. - BrowserAccessibilityManager* manager_; - - // The parent of this object, may be NULL if we're the root object. - BrowserAccessibility* parent_; - - // The ID of this object; globally unique within the browser process. - int32 child_id_; - - // The index of this within its parent object. - int32 index_in_parent_; - - // The ID of this object in the renderer process. - int32 renderer_id_; - - // The children of this object. - std::vector<BrowserAccessibility*> children_; - - // The number of internal references to this object. - int32 ref_count_; - - // Accessibility metadata from the renderer - string16 name_; - string16 value_; - std::map<int32, string16> attributes_; - std::vector<std::pair<string16, string16> > html_attributes_; - int32 role_; - int32 state_; - string16 role_name_; - gfx::Rect location_; - std::vector<int32> indirect_child_ids_; - std::vector<int32> line_breaks_; - - // BrowserAccessibility objects are reference-counted on some platforms. - // When we're done with this object and it's removed from our accessibility - // tree, a client may still be holding onto a pointer to this object, so - // we mark it as inactive so that calls to any of this object's methods - // immediately return failure. - bool instance_active_; - - private: - DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility); -}; - -#endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_ |