зеркало из https://github.com/mozilla/gecko-dev.git
528 строки
16 KiB
Plaintext
528 строки
16 KiB
Plaintext
/* clang-format off */
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/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* clang-format on */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#import <Cocoa/Cocoa.h>
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#include "DocAccessible.h"
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#import "MOXTextMarkerDelegate.h"
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#include "mozAccessible.h"
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#include "mozilla/Preferences.h"
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#include "nsISelectionListener.h"
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using namespace mozilla::a11y;
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#define PREF_ACCESSIBILITY_MAC_DEBUG "accessibility.mac.debug"
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static nsTHashMap<nsPtrHashKey<mozilla::a11y::Accessible>,
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MOXTextMarkerDelegate*>
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sDelegates;
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@implementation MOXTextMarkerDelegate
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+ (id)getOrCreateForDoc:(mozilla::a11y::Accessible*)aDoc {
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MOZ_ASSERT(aDoc);
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MOXTextMarkerDelegate* delegate = sDelegates.Get(aDoc);
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if (!delegate) {
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delegate = [[MOXTextMarkerDelegate alloc] initWithDoc:aDoc];
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sDelegates.InsertOrUpdate(aDoc, delegate);
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[delegate retain];
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}
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return delegate;
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}
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+ (void)destroyForDoc:(mozilla::a11y::Accessible*)aDoc {
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MOZ_ASSERT(aDoc);
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MOXTextMarkerDelegate* delegate = sDelegates.Get(aDoc);
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if (delegate) {
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sDelegates.Remove(aDoc);
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[delegate release];
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}
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}
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- (id)initWithDoc:(Accessible*)aDoc {
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MOZ_ASSERT(aDoc, "Cannot init MOXTextDelegate with null");
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if ((self = [super init])) {
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mGeckoDocAccessible = aDoc;
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}
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mCaretMoveGranularity = nsISelectionListener::NO_AMOUNT;
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return self;
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}
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- (void)dealloc {
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[self invalidateSelection];
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[super dealloc];
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}
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- (void)setSelectionFrom:(Accessible*)startContainer
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at:(int32_t)startOffset
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to:(Accessible*)endContainer
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at:(int32_t)endOffset {
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GeckoTextMarkerRange selection(GeckoTextMarker(startContainer, startOffset),
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GeckoTextMarker(endContainer, endOffset));
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// We store it as an AXTextMarkerRange because it is a safe
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// way to keep a weak reference - when we need to use the
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// range we can convert it back to a GeckoTextMarkerRange
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// and check that it's valid.
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mSelection = selection.CreateAXTextMarkerRange();
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CFRetain(mSelection);
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}
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- (void)setCaretOffset:(mozilla::a11y::Accessible*)container
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at:(int32_t)offset
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moveGranularity:(int32_t)granularity {
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GeckoTextMarker caretMarker(container, offset);
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mPrevCaret = mCaret;
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mCaret = caretMarker.CreateAXTextMarker();
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mCaretMoveGranularity = granularity;
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CFRetain(mCaret);
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}
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mozAccessible* GetEditableNativeFromGeckoAccessible(Accessible* aAcc) {
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// The gecko accessible may not have a native accessible so we need
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// to walk up the parent chain to find the nearest one.
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// This happens when caching is enabled and the text marker's accessible
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// may be a text leaf that is pruned from the platform.
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for (Accessible* acc = aAcc; acc; acc = acc->Parent()) {
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if (mozAccessible* mozAcc = GetNativeFromGeckoAccessible(acc)) {
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return [mozAcc moxEditableAncestor];
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}
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}
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return nil;
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}
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// This returns an info object to pass with AX SelectedTextChanged events.
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// It uses the current and previous caret position to make decisions
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// regarding which attributes to add to the info object.
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- (NSDictionary*)selectionChangeInfo {
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GeckoTextMarkerRange selectedGeckoRange =
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GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, mSelection);
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int32_t stateChangeType =
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selectedGeckoRange.Start() == selectedGeckoRange.End()
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? AXTextStateChangeTypeSelectionMove
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: AXTextStateChangeTypeSelectionExtend;
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// This is the base info object, includes the selected marker range and
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// the change type depending on the collapsed state of the selection.
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NSMutableDictionary* info = [[@{
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@"AXSelectedTextMarkerRange" : selectedGeckoRange.IsValid()
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? (__bridge id)mSelection
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: [NSNull null],
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@"AXTextStateChangeType" : @(stateChangeType),
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} mutableCopy] autorelease];
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GeckoTextMarker caretMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, mCaret);
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GeckoTextMarker prevCaretMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, mPrevCaret);
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if (!caretMarker.IsValid()) {
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// If the current caret is invalid, stop here and return base info.
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return info;
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}
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mozAccessible* caretEditable =
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GetEditableNativeFromGeckoAccessible(caretMarker.Acc());
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if (!caretEditable && stateChangeType == AXTextStateChangeTypeSelectionMove) {
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// If we are not in an editable, VO expects AXTextStateSync to be present
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// and true.
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info[@"AXTextStateSync"] = @YES;
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}
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if (!prevCaretMarker.IsValid() || caretMarker == prevCaretMarker) {
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// If we have no stored previous marker, stop here.
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return info;
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}
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mozAccessible* prevCaretEditable =
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GetEditableNativeFromGeckoAccessible(prevCaretMarker.Acc());
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if (prevCaretEditable != caretEditable) {
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// If the caret goes in or out of an editable, consider the
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// move direction "discontiguous".
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info[@"AXTextSelectionDirection"] =
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@(AXTextSelectionDirectionDiscontiguous);
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if ([[caretEditable moxFocused] boolValue]) {
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// If the caret is in a new focused editable, VO expects this attribute to
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// be present and to be true.
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info[@"AXTextSelectionChangedFocus"] = @YES;
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}
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return info;
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}
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bool isForward = prevCaretMarker < caretMarker;
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int direction = isForward ? AXTextSelectionDirectionNext
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: AXTextSelectionDirectionPrevious;
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int32_t granularity = AXTextSelectionGranularityUnknown;
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switch (mCaretMoveGranularity) {
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case nsISelectionListener::CHARACTER_AMOUNT:
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case nsISelectionListener::CLUSTER_AMOUNT:
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granularity = AXTextSelectionGranularityCharacter;
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break;
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case nsISelectionListener::WORD_AMOUNT:
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case nsISelectionListener::WORDNOSPACE_AMOUNT:
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granularity = AXTextSelectionGranularityWord;
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break;
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case nsISelectionListener::LINE_AMOUNT:
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granularity = AXTextSelectionGranularityLine;
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break;
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case nsISelectionListener::BEGINLINE_AMOUNT:
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direction = AXTextSelectionDirectionBeginning;
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granularity = AXTextSelectionGranularityLine;
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break;
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case nsISelectionListener::ENDLINE_AMOUNT:
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direction = AXTextSelectionDirectionEnd;
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granularity = AXTextSelectionGranularityLine;
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break;
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case nsISelectionListener::PARAGRAPH_AMOUNT:
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granularity = AXTextSelectionGranularityParagraph;
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break;
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default:
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break;
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}
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// Determine selection direction with marker comparison.
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// If the delta between the two markers is more than one, consider it
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// a word. Not accurate, but good enough for VO.
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[info addEntriesFromDictionary:@{
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@"AXTextSelectionDirection" : @(direction),
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@"AXTextSelectionGranularity" : @(granularity)
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}];
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return info;
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}
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- (void)invalidateSelection {
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CFRelease(mSelection);
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CFRelease(mCaret);
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CFRelease(mPrevCaret);
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mSelection = nil;
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}
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- (mozilla::a11y::GeckoTextMarkerRange)selection {
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return mozilla::a11y::GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, mSelection);
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}
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- (AXTextMarkerRef)moxStartTextMarker {
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GeckoTextMarker geckoTextPoint(mGeckoDocAccessible, 0);
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return geckoTextPoint.CreateAXTextMarker();
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}
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- (AXTextMarkerRef)moxEndTextMarker {
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GeckoTextMarker geckoTextPoint(mGeckoDocAccessible,
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nsIAccessibleText::TEXT_OFFSET_END_OF_TEXT);
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return geckoTextPoint.CreateAXTextMarker();
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}
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- (AXTextMarkerRangeRef)moxSelectedTextMarkerRange {
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return mSelection && GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, mSelection)
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.IsValid()
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? mSelection
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: nil;
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}
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- (NSString*)moxStringForTextMarkerRange:(AXTextMarkerRangeRef)textMarkerRange {
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mozilla::a11y::GeckoTextMarkerRange range =
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GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, textMarkerRange);
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if (!range.IsValid()) {
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return @"";
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}
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return range.Text();
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}
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- (NSNumber*)moxLengthForTextMarkerRange:(AXTextMarkerRangeRef)textMarkerRange {
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mozilla::a11y::GeckoTextMarkerRange range =
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GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, textMarkerRange);
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if (!range.IsValid()) {
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return @0;
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}
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return @(range.Length());
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}
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- (AXTextMarkerRangeRef)moxTextMarkerRangeForUnorderedTextMarkers:
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(NSArray*)textMarkers {
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if ([textMarkers count] != 2) {
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// Don't allow anything but a two member array.
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return nil;
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}
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GeckoTextMarker p1 = GeckoTextMarker::MarkerFromAXTextMarker(
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mGeckoDocAccessible, (__bridge AXTextMarkerRef)textMarkers[0]);
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GeckoTextMarker p2 = GeckoTextMarker::MarkerFromAXTextMarker(
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mGeckoDocAccessible, (__bridge AXTextMarkerRef)textMarkers[1]);
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if (!p1.IsValid() || !p2.IsValid()) {
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// If either marker is invalid, return nil.
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return nil;
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}
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bool ordered = p1 < p2;
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GeckoTextMarkerRange range(ordered ? p1 : p2, ordered ? p2 : p1);
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return range.CreateAXTextMarkerRange();
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}
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- (AXTextMarkerRef)moxStartTextMarkerForTextMarkerRange:
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(AXTextMarkerRangeRef)textMarkerRange {
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mozilla::a11y::GeckoTextMarkerRange range =
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GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, textMarkerRange);
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return range.IsValid() ? range.Start().CreateAXTextMarker() : nil;
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}
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- (AXTextMarkerRef)moxEndTextMarkerForTextMarkerRange:
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(AXTextMarkerRangeRef)textMarkerRange {
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mozilla::a11y::GeckoTextMarkerRange range =
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GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, textMarkerRange);
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return range.IsValid() ? range.End().CreateAXTextMarker() : nil;
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}
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- (AXTextMarkerRangeRef)moxLeftWordTextMarkerRangeForTextMarker:
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(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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return geckoTextMarker.LeftWordRange().CreateAXTextMarkerRange();
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}
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- (AXTextMarkerRangeRef)moxRightWordTextMarkerRangeForTextMarker:
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(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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return geckoTextMarker.RightWordRange().CreateAXTextMarkerRange();
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}
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- (AXTextMarkerRangeRef)moxLineTextMarkerRangeForTextMarker:
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(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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return geckoTextMarker.LineRange().CreateAXTextMarkerRange();
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}
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- (AXTextMarkerRangeRef)moxLeftLineTextMarkerRangeForTextMarker:
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(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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return geckoTextMarker.LeftLineRange().CreateAXTextMarkerRange();
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}
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- (AXTextMarkerRangeRef)moxRightLineTextMarkerRangeForTextMarker:
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(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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return geckoTextMarker.RightLineRange().CreateAXTextMarkerRange();
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}
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- (AXTextMarkerRangeRef)moxParagraphTextMarkerRangeForTextMarker:
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(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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return geckoTextMarker.ParagraphRange().CreateAXTextMarkerRange();
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}
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// override
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- (AXTextMarkerRangeRef)moxStyleTextMarkerRangeForTextMarker:
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(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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return geckoTextMarker.StyleRange().CreateAXTextMarkerRange();
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}
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- (AXTextMarkerRef)moxNextTextMarkerForTextMarker:(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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if (!geckoTextMarker.Next()) {
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return nil;
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}
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return geckoTextMarker.CreateAXTextMarker();
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}
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- (AXTextMarkerRef)moxPreviousTextMarkerForTextMarker:
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(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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if (!geckoTextMarker.Previous()) {
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return nil;
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}
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return geckoTextMarker.CreateAXTextMarker();
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}
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- (NSAttributedString*)moxAttributedStringForTextMarkerRange:
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(AXTextMarkerRangeRef)textMarkerRange {
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mozilla::a11y::GeckoTextMarkerRange range =
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GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, textMarkerRange);
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if (!range.IsValid()) {
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return nil;
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}
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return range.AttributedText();
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}
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- (NSValue*)moxBoundsForTextMarkerRange:(AXTextMarkerRangeRef)textMarkerRange {
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mozilla::a11y::GeckoTextMarkerRange range =
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GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, textMarkerRange);
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if (!range.IsValid()) {
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return nil;
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}
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return range.Bounds();
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}
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- (NSNumber*)moxIndexForTextMarker:(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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GeckoTextMarkerRange range(GeckoTextMarker(mGeckoDocAccessible, 0),
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geckoTextMarker);
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return @(range.Length());
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}
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- (AXTextMarkerRef)moxTextMarkerForIndex:(NSNumber*)index {
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GeckoTextMarker geckoTextMarker = GeckoTextMarker::MarkerFromIndex(
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mGeckoDocAccessible, [index integerValue]);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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return geckoTextMarker.CreateAXTextMarker();
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}
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- (id)moxUIElementForTextMarker:(AXTextMarkerRef)textMarker {
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return nil;
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}
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Accessible* leaf = geckoTextMarker.Leaf();
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if (!leaf) {
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return nil;
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}
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return GetNativeFromGeckoAccessible(leaf);
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}
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- (AXTextMarkerRangeRef)moxTextMarkerRangeForUIElement:(id)element {
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if (![element isKindOfClass:[mozAccessible class]]) {
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return nil;
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}
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GeckoTextMarkerRange range((Accessible*)[element geckoAccessible]);
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return range.CreateAXTextMarkerRange();
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}
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- (NSString*)moxMozDebugDescriptionForTextMarker:(AXTextMarkerRef)textMarker {
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if (!mozilla::Preferences::GetBool(PREF_ACCESSIBILITY_MAC_DEBUG)) {
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return nil;
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}
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GeckoTextMarker geckoTextMarker =
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GeckoTextMarker::MarkerFromAXTextMarker(mGeckoDocAccessible, textMarker);
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if (!geckoTextMarker.IsValid()) {
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return @"<GeckoTextMarker 0x0 [0]>";
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}
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return [NSString stringWithFormat:@"<GeckoTextMarker %p [%d]>",
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geckoTextMarker.Acc(),
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geckoTextMarker.Offset()];
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}
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- (NSString*)moxMozDebugDescriptionForTextMarkerRange:
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(AXTextMarkerRangeRef)textMarkerRange {
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if (!mozilla::Preferences::GetBool(PREF_ACCESSIBILITY_MAC_DEBUG)) {
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return nil;
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}
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mozilla::a11y::GeckoTextMarkerRange range =
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GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
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mGeckoDocAccessible, textMarkerRange);
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if (!range.IsValid()) {
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return @"<GeckoTextMarkerRange 0x0 [0] - 0x0 [0]>";
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}
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return [NSString stringWithFormat:@"<GeckoTextMarkerRange %p [%d] - %p [%d]>",
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range.Start().Acc(), range.Start().Offset(),
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range.End().Acc(), range.End().Offset()];
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}
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- (void)moxSetSelectedTextMarkerRange:(AXTextMarkerRangeRef)textMarkerRange {
|
|
mozilla::a11y::GeckoTextMarkerRange range =
|
|
GeckoTextMarkerRange::MarkerRangeFromAXTextMarkerRange(
|
|
mGeckoDocAccessible, textMarkerRange);
|
|
if (range.IsValid()) {
|
|
range.Select();
|
|
}
|
|
}
|
|
|
|
@end
|