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/*
* Copyright (C) 2012 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"
// Magic pretend-to-be-a-chromium-build flags
#undef WEBKIT_IMPLEMENTATION
#undef LOG
#include "content/content_detector.h"
#include "public/android/WebDOMTextContentWalker.h"
#include "public/android/WebHitTestInfo.h"
#include "Document.h"
#include "Node.h"
#include "Page.h"
#include "Settings.h"
using WebKit::WebDOMTextContentWalker;
using WebKit::WebRange;
ContentDetector::Result ContentDetector::FindTappedContent(
const WebKit::WebHitTestInfo& hit_test) {
if (!IsEnabled(hit_test))
return Result();
WebKit::WebRange range = FindContentRange(hit_test);
if (range.isNull())
return Result();
std::string text = GetContentText(range);
GURL intent_url = GetIntentURL(text);
return Result(range, text, intent_url);
}
WebRange ContentDetector::FindContentRange(
const WebKit::WebHitTestInfo& hit_test) {
WebDOMTextContentWalker content_walker(hit_test, GetMaximumContentLength());
string16 content = content_walker.content();
if (content.empty())
return WebRange();
size_t selected_offset = content_walker.hitOffsetInContent();
for (size_t start_offset = 0; start_offset < content.length();) {
size_t relative_start, relative_end;
if (!FindContent(content.begin() + start_offset,
content.end(), &relative_start, &relative_end)) {
break;
} else {
size_t content_start = start_offset + relative_start;
size_t content_end = start_offset + relative_end;
DCHECK(content_end <= content.length());
if (selected_offset >= content_start && selected_offset < content_end) {
WebRange range = content_walker.contentOffsetsToRange(
content_start, content_end);
DCHECK(!range.isNull());
return range;
} else {
start_offset += relative_end;
}
}
}
return WebRange();
}
WebCore::Settings* ContentDetector::GetSettings(const WebKit::WebHitTestInfo& hit_test) {
if (!hit_test.node() || !hit_test.node()->document())
return 0;
return hit_test.node()->document()->page()->settings();
}
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