1 files changed, 186 insertions, 0 deletions
diff --git a/chrome/browser/resources/about_sys/about_sys.js b/chrome/browser/resources/about_sys/about_sys.js
new file mode 100644
index 0000000..e9ecb4a
--- /dev/null
+++ b/chrome/browser/resources/about_sys/about_sys.js
@@ -0,0 +1,186 @@
+// Copyright 2013 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.
+
+var localStrings;
+
+// Contents of lines that act as delimiters for multi-line values.
+var DELIM_START = '---------- START ----------';
+var DELIM_END = '---------- END ----------';
+
+// Limit file size to 10 MiB to prevent hanging on accidental upload.
+var MAX_FILE_SIZE = 10485760;
+
+function getValueDivForButton(button) {
+  return $(button.id.substr(0, button.id.length - 4));
+}
+
+function getButtonForValueDiv(valueDiv) {
+  return $(valueDiv.id + '-btn');
+}
+
+function handleDragOver(e) {
+  e.dataTransfer.dropEffect = 'copy';
+  e.preventDefault();
+}
+
+function showError(fileName) {
+  $('status').textContent = localStrings.getStringF('parseError', fileName);
+}
+
+/**
+ * Toggles whether an item is collapsed or expanded.
+ */
+function changeCollapsedStatus() {
+  var valueDiv = getValueDivForButton(this);
+  if (valueDiv.parentNode.className == 'number-collapsed') {
+    valueDiv.parentNode.className = 'number-expanded';
+    this.textContent = localStrings.getString('collapseBtn');
+  } else {
+    valueDiv.parentNode.className = 'number-collapsed';
+    this.textContent = localStrings.getString('expandBtn');
+  }
+}
+
+/**
+ * Collapses all log items.
+ */
+function collapseAll() {
+  var valueDivs = document.getElementsByClassName('stat-value');
+  for (var i = 0; i < valueDivs.length; i++) {
+    var button = getButtonForValueDiv(valueDivs[i]);
+    if (button && button.className != 'button-hidden') {
+      button.textContent = localStrings.getString('expandBtn');
+      valueDivs[i].parentNode.className = 'number-collapsed';
+    }
+  }
+}
+
+/**
+ * Expands all log items.
+ */
+function expandAll() {
+  var valueDivs = document.getElementsByClassName('stat-value');
+  for (var i = 0; i < valueDivs.length; i++) {
+    var button = getButtonForValueDiv(valueDivs[i]);
+    if (button && button.className != 'button-hidden') {
+      button.textContent = localStrings.getString('collapseBtn');
+      valueDivs[i].parentNode.className = 'number-expanded';
+    }
+  }
+}
+
+/**
+ * Collapse only those log items with multi-line values.
+ */
+function collapseMultiLineStrings() {
+  var valueDivs = document.getElementsByClassName('stat-value');
+  var nameDivs = document.getElementsByClassName('stat-name');
+  for (var i = 0; i < valueDivs.length; i++) {
+    var button = getButtonForValueDiv(valueDivs[i]);
+    button.onclick = changeCollapsedStatus;
+    if (valueDivs[i].scrollHeight > (nameDivs[i].scrollHeight * 2)) {
+      button.className = '';
+      button.textContent = localStrings.getString('expandBtn');
+      valueDivs[i].parentNode.className = 'number-collapsed';
+    } else {
+      button.className = 'button-hidden';
+      valueDivs[i].parentNode.className = 'number';
+    }
+  }
+}
+
+/**
+ * Read in a log asynchronously, calling parseSystemLog if successful.
+ * @param {Event} e The drop event from dropping a file dragged onto the page.
+ */
+function importLog(e) {
+  var file = e.dataTransfer.files[0];
+  if (file && file.size <= MAX_FILE_SIZE) {
+    var reader = new FileReader();
+    reader.onload = function() {
+      if (parseSystemLog(this.result)) {
+        // Reset table title and status
+        $('tableTitle').textContent =
+              localStrings.getStringF('logFileTableTitle', file.name);
+        $('status').textContent = '';
+      } else {
+        showError(file.name);
+      }
+    };
+    reader.readAsText(file);
+  } else if (file) {
+    showError(file.name);
+  }
+  e.preventDefault();
+}
+
+/**
+ * Convert text-based log into list of name-value pairs.
+ * @param {string} text The raw text of a log.
+ * @return {boolean} True if the log was parsed successfully.
+ */
+function parseSystemLog(text) {
+  var details = [];
+  var lines = text.split('\n');
+  for (var i = 0, len = lines.length; i < len; i++) {
+    // Skip empty lines.
+    if (!lines[i])
+      continue;
+
+    var delimiter = lines[i].indexOf('=');
+    if (delimiter <= 0) {
+      if (i == lines.length - 1)
+         break;
+      // If '=' is missing here, format is wrong.
+      return false;
+    }
+
+    var name = lines[i].substring(0, delimiter);
+    var value = '';
+    // Set value if non-empty
+    if (lines[i].length > delimiter + 1)
+      value = lines[i].substring(delimiter + 1);
+
+    // Delimiters are based on kMultilineIndicatorString, kMultilineStartString,
+    // and kMultilineEndString in chrome/browser/feedback/feedback_data.cc.
+    // If these change, we should check for both the old and new versions.
+    if (value == '<multiline>') {
+      // Skip start delimiter.
+      if (i == len - 1 ||
+          lines[++i].indexOf(DELIM_START) == -1)
+        return false;
+
+      ++i;
+      value = '';
+      // Append lines between start and end delimiters.
+      while (i < len && lines[i] != DELIM_END)
+        value += lines[i++] + '\n';
+
+      // Remove trailing newline.
+      if (value)
+        value = value.substr(0, value.length - 1);
+    }
+    details.push({'statName': name, 'statValue': value});
+  }
+
+  templateData['details'] = details;
+  i18nTemplate.process(document, templateData);
+  jstProcess(new JsEvalContext(templateData), $('t'));
+
+  collapseMultiLineStrings();
+  return true;
+}
+
+document.addEventListener('DOMContentLoaded', function() {
+  localStrings = new LocalStrings();
+
+  $('collapseAll').onclick = collapseAll;
+  $('expandAll').onclick = expandAll;
+
+  var tp = $('t');
+  tp.addEventListener('dragover', handleDragOver, false);
+  tp.addEventListener('drop', importLog, false);
+
+  collapseMultiLineStrings();
+});