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Diffstat (limited to 'Source/WebKit/android/content/content_detector.cpp')
-rw-r--r-- | Source/WebKit/android/content/content_detector.cpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/Source/WebKit/android/content/content_detector.cpp b/Source/WebKit/android/content/content_detector.cpp new file mode 100644 index 0000000..b29a457 --- /dev/null +++ b/Source/WebKit/android/content/content_detector.cpp @@ -0,0 +1,86 @@ +/* + * 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" + +using WebKit::WebDOMTextContentWalker; +using WebKit::WebRange; + +ContentDetector::Result ContentDetector::FindTappedContent( + const WebKit::WebHitTestInfo& hit_test) { + 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(); +} |