From 773979f92560dd1aead375c82fd75b584a141e5d Mon Sep 17 00:00:00 2001
From: John Reck <jreck@google.com>
Date: Mon, 13 Feb 2012 09:26:06 -0800
Subject: Support address detection

Change-Id: I88b6ebfb4c967e954a2420592a58af3ed188226d
---
 Source/WebKit/android/content/content_detector.cpp | 86 ++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 Source/WebKit/android/content/content_detector.cpp

(limited to 'Source/WebKit/android/content/content_detector.cpp')

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();
+}
-- 
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