Index: third_party/WebKit/Source/core/dom/DocumentStatisticsCollector.cpp |
diff --git a/third_party/WebKit/Source/core/dom/DocumentStatisticsCollector.cpp b/third_party/WebKit/Source/core/dom/DocumentStatisticsCollector.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..76a408099a2c1c7cf72656761475b71850a395ec |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/dom/DocumentStatisticsCollector.cpp |
@@ -0,0 +1,95 @@ |
+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "config.h" |
+#include "DocumentStatisticsCollector.h" |
+ |
+#include "core/HTMLNames.h" |
+#include "core/editing/EphemeralRange.h" |
+#include "core/editing/iterators/TextIterator.h" |
+#include "core/editing/iterators/WordAwareIterator.h" |
+#include "core/inspector/ConsoleMessage.h" |
+#include "platform/text/TextBreakIterator.h" |
+#include "wtf/text/StringBuilder.h" |
+ |
+using namespace WTF; |
+using namespace Unicode; |
+ |
+namespace blink { |
+ |
+using namespace HTMLNames; |
+ |
+ |
+DocumentStatisticsCollector::DocumentStatisticsCollector() |
+ : m_statisticsCollected(false) |
+ , m_readyToCollect(false) |
+{ |
+} |
+ |
+void DocumentStatisticsCollector::collectStatistics(Document& document) |
+{ |
+ if (!m_readyToCollect) |
+ return; |
+ |
+ if (m_statisticsCollected) |
+ return; |
+ |
+ if (!document.frame() || !document.frame()->isMainFrame()) |
+ return; |
+ |
+ if (!document.hasFinishedParsing()) |
+ return; |
+ |
+ ASSERT(document.body()); |
+ |
+ StringBuilder message; |
+ message.append("Done: "); |
+ message.appendNumber(m_statisticsCollected); |
+ |
+ m_statisticsCollected = true; |
+ |
+ DocumentStatistics statistics = {0}; |
+ |
+ // First, traverse the DOM tree and collect statistics on element counts and textContent length. |
+ for (Node& node : NodeTraversal::descendantsOf(*document.body())) { |
+ statistics.nodeCount++; |
+ if (node.isElementNode()) { |
+ statistics.elementCount++; |
+ Element& element = toElement(node); |
+ if (element.hasTagName(aTag)) |
+ statistics.anchorElementCount++; |
+ else if (element.hasTagName(formTag)) |
+ statistics.formElementCount++; |
+ } else if (node.isTextNode()) { |
+ String text = toText(node).data(); |
+ statistics.textContentLength += text.length(); |
+ } |
+ } |
+ |
+ // Next, traverse the Layout tree and collect statistics on innerText length. |
+ EphemeralRange range = EphemeralRange::rangeOfContents(*document.body()); |
+ WordAwareIterator it(range.startPosition(), range.endPosition()); |
+ for (; !it.atEnd(); it.advance()) { |
+ statistics.innerTextLength += it.length(); |
+ } |
+ |
+ message.append(". FinishedParsing: "); |
+ message.appendNumber(document.hasFinishedParsing()); |
+ message.append(". Node: "); |
+ message.appendNumber(statistics.nodeCount); |
+ message.append(", elements: "); |
+ message.appendNumber(statistics.elementCount); |
+ message.append(", anchors: "); |
+ message.appendNumber(statistics.anchorElementCount); |
+ message.append(", forms: "); |
+ message.appendNumber(statistics.formElementCount); |
+ message.append(", textContentLength: "); |
+ message.appendNumber(statistics.textContentLength); |
+ message.append(", innerTextLength: "); |
+ message.appendNumber(statistics.innerTextLength); |
+ RefPtrWillBeRawPtr<ConsoleMessage> consoleMessage = ConsoleMessage::create(ConsoleAPIMessageSource, DebugMessageLevel, message.toString()); |
+ // document.addConsoleMessage(consoleMessage); |
mdjones
2015/09/29 17:31:42
Is this logging code permanent?
wychen
2015/09/29 21:46:57
The WebKit part is not done yet. This is just for
|
+} |
+ |
+} |