Index: third_party/WebKit/Source/WebKit/chromium/src/mac/WebTextHelper.mm |
diff --git a/third_party/WebKit/Source/WebKit/chromium/src/mac/WebTextHelper.mm b/third_party/WebKit/Source/WebKit/chromium/src/mac/WebTextHelper.mm |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4dbd8b501bbda2043e93ce8d8dc0666a91c773e1 |
--- /dev/null |
+++ b/third_party/WebKit/Source/WebKit/chromium/src/mac/WebTextHelper.mm |
@@ -0,0 +1,257 @@ |
+/* |
jam
2011/01/21 18:51:07
nit: usually we have the interface in the public d
Robert Sesek
2011/01/21 23:40:07
Ok. I won't do that now because it's easier for th
|
+ * Copyright (C) 2011 Google Inc. All rights reserved. |
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions are |
+ * met: |
+ * |
+ * * Redistributions of source code must retain the above copyright |
+ * notice, this list of conditions and the following disclaimer. |
+ * * Redistributions in binary form must reproduce the above |
+ * copyright notice, this list of conditions and the following disclaimer |
+ * in the documentation and/or other materials provided with the |
+ * distribution. |
+ * * Neither the name of Google Inc. nor the names of its |
+ * contributors may be used to endorse or promote products derived from |
+ * this software without specific prior written permission. |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ */ |
+ |
+#include "config.h" |
+#include "WebFrameImpl.h" |
+#include "WebTextHelper.h" |
+ |
+#include "ColorMac.h" |
+#include "Document.h" |
+#include "Element.h" |
+#include "FocusController.h" |
+#include "Frame.h" |
+#include "FrameView.h" |
+#include "HitTestResult.h" |
+#include "HTMLElement.h" |
+#include "Node.h" |
+#include "Range.h" |
+#include "TextIterator.h" |
+#include "WebRect.h" |
+#include "WebString.h" |
+ |
+#import <Cocoa/Cocoa.h> |
+ |
+using namespace WebCore; |
+ |
+namespace WebKit { |
+ |
+// This is the internal implementation of WebTextHelper that can return WebCore |
+// types. |
+class WebTextHelperImpl { |
+public: |
+ explicit WebTextHelperImpl(WebFrame* frame) : m_frame(frame) {} |
+ |
+ IntRect firstRectForWkRange(Range* range); |
+ |
+ Range* characterRangeAtPoint(const IntPoint point); |
+ |
+ void getLocationAndLengthFromRange(Range* range, NSUInteger& location, NSUInteger& length); |
+ |
+ Element* rangeScope(); |
+ |
+ WebFrameImpl* webframeimpl(); |
+ |
+protected: |
+ WebFrame* m_frame; |
+}; |
+ |
+IntRect WebTextHelperImpl::firstRectForWkRange(Range* range) |
+{ |
+ return webframeimpl()->frame()->editor()->firstRectForRange(range); |
+} |
+ |
+// This function is copied from /WebKit2/WebPage/mac/WebPageMac.mm. |
+Range* WebTextHelperImpl::characterRangeAtPoint(const IntPoint point) |
+{ |
+ Frame* frame(webframeimpl()->frame()); |
+ |
+ VisiblePosition position = frame->visiblePositionForPoint(point); |
+ if (position.isNull()) |
+ return NULL; |
+ |
+ VisiblePosition previous = position.previous(); |
+ if (previous.isNotNull()) { |
+ Range* previousCharacterRange = makeRange(previous, position).get(); |
+ IntRect rect = firstRectForWkRange(previousCharacterRange); |
+ if (rect.contains(point)) |
+ return previousCharacterRange; |
+ } |
+ |
+ VisiblePosition next = position.next(); |
+ if (next.isNotNull()) { |
+ Range* nextCharacterRange = makeRange(position, next).get(); |
+ IntRect rect = firstRectForWkRange(nextCharacterRange); |
+ if (rect.contains(point)) |
+ return nextCharacterRange; |
+ } |
+ |
+ return NULL; |
+} |
+ |
+// This function is copied from /WebKit2/WebPage/WebPage.cpp. |
+void WebTextHelperImpl::getLocationAndLengthFromRange(Range* range, NSUInteger& location, NSUInteger& length) |
+{ |
+ location = notFound; |
+ length = 0; |
+ |
+ if (!range || !range->startContainer()) |
+ return; |
+ |
+ Element* selectionRoot = range->ownerDocument()->frame()->selection()->rootEditableElement(); |
+ Element* scope = selectionRoot ? selectionRoot : range->ownerDocument()->documentElement(); |
+ |
+ // Mouse events may cause TSM to attempt to create an NSRange for a portion of the view |
+ // that is not inside the current editable region. These checks ensure we don't produce |
+ // potentially invalid data when responding to such requests. |
+ if (range->startContainer() != scope && !range->startContainer()->isDescendantOf(scope)) |
+ return; |
+ if (range->endContainer() != scope && !range->endContainer()->isDescendantOf(scope)) |
+ return; |
+ |
+ RefPtr<Range> testRange = Range::create(scope->document(), scope, 0, range->startContainer(), range->startOffset()); |
+ ASSERT(testRange->startContainer() == scope); |
+ location = TextIterator::rangeLength(testRange.get()); |
+ |
+ ExceptionCode ec; |
+ testRange->setEnd(range->endContainer(), range->endOffset(), ec); |
+ ASSERT(testRange->startContainer() == scope); |
+ length = TextIterator::rangeLength(testRange.get()) - location; |
+} |
+ |
+Element* WebTextHelperImpl::rangeScope() |
+{ |
+ Frame* frame(webframeimpl()->frame()); |
+ Element* selectionRoot(frame->selection()->rootEditableElement()); |
+ return selectionRoot ? selectionRoot : frame->document()->documentElement(); |
+} |
+ |
+WebFrameImpl* WebTextHelperImpl::webframeimpl() |
+{ |
+ return static_cast<WebFrameImpl*>(m_frame); |
+} |
+ |
+//////////////////////////////////////////////////////////////////////////////// |
+ |
+WebTextHelper::WebTextHelper(WebFrame* frame) |
+ : m_private(new WebTextHelperImpl(frame)) |
+{ |
+} |
+ |
+WebTextHelper::~WebTextHelper() |
+{ |
+ m_private.reset(0); |
+} |
+ |
+uint WebTextHelper::characterIndexForPoint(int x, int y) |
+{ |
+ Frame* frame(m_private->webframeimpl()->frame()); |
+ if (!frame) |
+ return NSNotFound; |
+ |
+ IntPoint scrollPosition(frame->view()->scrollPosition()); |
+ IntPoint point(x + scrollPosition.x(), y + scrollPosition.y()); |
+ HitTestResult result = frame->eventHandler()->hitTestResultAtPoint(point, false); |
+ frame = result.innerNonSharedNode() ? result.innerNonSharedNode()->document()->frame() : frame->page()->focusController()->focusedOrMainFrame(); |
+ |
+ Range* range(m_private->characterRangeAtPoint(result.point())); |
+ if (!range) |
+ return NSNotFound; |
+ |
+ NSRange nsRange = { 0 }; |
+ m_private->getLocationAndLengthFromRange(range, nsRange.location, nsRange.length); |
+ |
+ return nsRange.location; |
+} |
+ |
+WebKit::WebRect WebTextHelper::firstRectForRange(uint location, uint length) |
+{ |
+ Frame* frame(m_private->webframeimpl()->frame()); |
+ if (frame->view()->needsLayout()) |
+ frame->view()->layout(); |
+ |
+ RefPtr<Range> range(TextIterator::rangeFromLocationAndLength(m_private->rangeScope(), location, length)); |
James Su
2011/01/21 00:02:47
range could be NULL if the given location is out o
Robert Sesek
2011/01/21 23:40:07
Taken care of the NULL dereference. But I don't th
|
+ |
+ WebKit::WebRect rect(m_private->firstRectForWkRange(range.get())); |
+ IntPoint scrollPosition(frame->view()->scrollPosition()); |
+ rect.x += scrollPosition.x(); |
+ rect.y -= scrollPosition.y(); |
+ return rect; |
+} |
+ |
+// This function is copied from /WebKit/mac/Misc/WebNSAttributedStringExtras.mm. |
+WebKit::WebString WebTextHelper::substringInRange(uint location, uint length) |
+{ |
+ Frame* frame(m_private->webframeimpl()->frame()); |
+ if (frame->view()->needsLayout()) |
+ frame->view()->layout(); |
+ |
+ RefPtr<Range> range(TextIterator::rangeFromLocationAndLength(m_private->rangeScope(), location, length)); |
James Su
2011/01/21 00:02:47
range could be NULL.
Robert Sesek
2011/01/21 23:40:07
Done.
|
+ |
+ NSMutableAttributedString* string = [[NSMutableAttributedString alloc] init]; |
+ NSMutableDictionary* attrs = [NSMutableDictionary dictionary]; |
+ |
+ unsigned position = 0; |
+ for (TextIterator it(range.get(), TextIteratorEntersTextControls); |
+ !it.atEnd() && [string length] < length; it.advance()) { |
+ unsigned numCharacters = it.length(); |
+ if (!numCharacters) |
+ continue; |
+ |
+ ExceptionCode exception = 0; |
+ Node* container = it.range()->startContainer(exception); |
+ RenderObject* renderer = container->renderer(); |
+ ASSERT(renderer); |
+ if (!renderer) |
+ continue; |
+ |
+ RenderStyle* style = renderer->style(); |
+ NSFont* font = style->font().primaryFont()->getNSFont(); |
+ // If the platform font can't be loaded, it's likely that the site is |
+ // using a web font. For now, just use the default font instead. |
+ // TODO(rsesek): Change the font activation flags to allow other processes |
+ // to use the font. |
+ if (!font) |
+ font = [NSFont systemFontOfSize:style->font().size()]; |
+ [attrs setObject:font forKey:NSFontAttributeName]; |
+ |
+ if (style->visitedDependentColor(CSSPropertyColor).alpha()) |
+ [attrs setObject:nsColor(style->visitedDependentColor(CSSPropertyColor)) forKey:NSForegroundColorAttributeName]; |
+ else |
+ [attrs removeObjectForKey:NSForegroundColorAttributeName]; |
+ if (style->visitedDependentColor(CSSPropertyBackgroundColor).alpha()) |
+ [attrs setObject:nsColor(style->visitedDependentColor(CSSPropertyBackgroundColor)) forKey:NSBackgroundColorAttributeName]; |
+ else |
+ [attrs removeObjectForKey:NSBackgroundColorAttributeName]; |
+ |
+ NSString* substring = |
+ [[[NSString alloc] initWithCharactersNoCopy:const_cast<UChar*>(it.characters()) |
+ length:it.length() |
+ freeWhenDone:NO] autorelease]; |
+ [string replaceCharactersInRange:NSMakeRange(position, 0) |
+ withString:substring]; |
+ [string setAttributes:attrs range:NSMakeRange(position, numCharacters)]; |
+ position += numCharacters; |
+ } |
+ NSData* archivedData([NSArchiver archivedDataWithRootObject:string]); |
+ return WebKit::WebString(static_cast<const WebUChar*>([archivedData bytes]), |
+ [archivedData length]); |
+} |
+ |
+} // namespace WebKit |