DevTools: extract modules (with extensions)

third_party/WebKit/Source/devtools/front_end/sources/UISourceCodeFrame.js

-/*
- * 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:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. 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.
- *
- * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS 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 GOOGLE INC.
- * OR ITS 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.
- */
-
-/**
- * @unrestricted
- */
-Sources.UISourceCodeFrame = class extends SourceFrame.SourceFrame {
-  /**
-   * @param {!Workspace.UISourceCode} uiSourceCode
-   */
-  constructor(uiSourceCode) {
-    super(uiSourceCode.contentURL(), workingCopy);
-    this._uiSourceCode = uiSourceCode;
-    this.setEditable(this._canEditSource());
-
-    if (Runtime.experiments.isEnabled('sourceDiff'))
-      this._diff = new Sources.SourceCodeDiff(uiSourceCode.requestOriginalContent(), this.textEditor);
-
-    /** @type {?UI.AutocompleteConfig} */
-    this._autocompleteConfig = {isWordChar: Common.TextUtils.isWordChar};
-    Common.moduleSetting('textEditorAutocompletion').addChangeListener(this._updateAutocomplete, this);
-    this._updateAutocomplete();
-
-    /** @type {?Persistence.PersistenceBinding} */
-    this._persistenceBinding = Persistence.persistence.binding(uiSourceCode);
-
-    /** @type {!Map<number, !Sources.UISourceCodeFrame.RowMessageBucket>} */
-    this._rowMessageBuckets = new Map();
-    /** @type {!Set<string>} */
-    this._typeDecorationsPending = new Set();
-    this._uiSourceCode.addEventListener(
-        Workspace.UISourceCode.Events.WorkingCopyChanged, this._onWorkingCopyChanged, this);
-    this._uiSourceCode.addEventListener(
-        Workspace.UISourceCode.Events.WorkingCopyCommitted, this._onWorkingCopyCommitted, this);
-
-    this._messageAndDecorationListeners = [];
-    this._installMessageAndDecorationListeners();
-
-    Persistence.persistence.subscribeForBindingEvent(this._uiSourceCode, this._onBindingChanged.bind(this));
-
-    this.textEditor.addEventListener(
-        SourceFrame.SourcesTextEditor.Events.EditorBlurred,
-        () => UI.context.setFlavor(Sources.UISourceCodeFrame, null));
-    this.textEditor.addEventListener(
-        SourceFrame.SourcesTextEditor.Events.EditorFocused,
-        () => UI.context.setFlavor(Sources.UISourceCodeFrame, this));
-
-    this._updateStyle();
-
-    this._errorPopoverHelper = new UI.PopoverHelper(this.element);
-    this._errorPopoverHelper.initializeCallbacks(this._getErrorAnchor.bind(this), this._showErrorPopover.bind(this));
-
-    this._errorPopoverHelper.setTimeout(100, 100);
-
-    /**
-     * @return {!Promise<?string>}
-     */
-    function workingCopy() {
-      if (uiSourceCode.isDirty())
-        return /** @type {!Promise<?string>} */ (Promise.resolve(uiSourceCode.workingCopy()));
-      return uiSourceCode.requestContent();
-    }
-  }
-
-  _installMessageAndDecorationListeners() {
-    if (this._persistenceBinding) {
-      var networkSourceCode = this._persistenceBinding.network;
-      var fileSystemSourceCode = this._persistenceBinding.fileSystem;
-      this._messageAndDecorationListeners = [
-        networkSourceCode.addEventListener(Workspace.UISourceCode.Events.MessageAdded, this._onMessageAdded, this),
-        networkSourceCode.addEventListener(Workspace.UISourceCode.Events.MessageRemoved, this._onMessageRemoved, this),
-        networkSourceCode.addEventListener(
-            Workspace.UISourceCode.Events.LineDecorationAdded, this._onLineDecorationAdded, this),
-        networkSourceCode.addEventListener(
-            Workspace.UISourceCode.Events.LineDecorationRemoved, this._onLineDecorationRemoved, this),
-
-        fileSystemSourceCode.addEventListener(Workspace.UISourceCode.Events.MessageAdded, this._onMessageAdded, this),
-        fileSystemSourceCode.addEventListener(
-            Workspace.UISourceCode.Events.MessageRemoved, this._onMessageRemoved, this),
-      ];
-    } else {
-      this._messageAndDecorationListeners = [
-        this._uiSourceCode.addEventListener(Workspace.UISourceCode.Events.MessageAdded, this._onMessageAdded, this),
-        this._uiSourceCode.addEventListener(Workspace.UISourceCode.Events.MessageRemoved, this._onMessageRemoved, this),
-        this._uiSourceCode.addEventListener(
-            Workspace.UISourceCode.Events.LineDecorationAdded, this._onLineDecorationAdded, this),
-        this._uiSourceCode.addEventListener(
-            Workspace.UISourceCode.Events.LineDecorationRemoved, this._onLineDecorationRemoved, this)
-      ];
-    }
-  }
-
-  /**
-   * @return {!Workspace.UISourceCode}
-   */
-  uiSourceCode() {
-    return this._uiSourceCode;
-  }
-
-  /**
-   * @override
-   */
-  wasShown() {
-    super.wasShown();
-    // We need CodeMirrorTextEditor to be initialized prior to this call as it calls |cursorPositionToCoordinates| internally. @see crbug.com/506566
-    setImmediate(this._updateBucketDecorations.bind(this));
-  }
-
-  /**
-   * @override
-   */
-  willHide() {
-    super.willHide();
-    UI.context.setFlavor(Sources.UISourceCodeFrame, null);
-    this._uiSourceCode.removeWorkingCopyGetter();
-  }
-
-  /**
-   * @return {boolean}
-   */
-  _canEditSource() {
-    if (Persistence.persistence.binding(this._uiSourceCode))
-      return true;
-    if (this._uiSourceCode.project().canSetFileContent())
-      return true;
-    if (this._uiSourceCode.project().isServiceProject())
-      return false;
-    return this._uiSourceCode.contentType() !== Common.resourceTypes.Document;
-  }
-
-  commitEditing() {
-    if (!this._uiSourceCode.isDirty())
-      return;
-
-    this._muteSourceCodeEvents = true;
-    this._uiSourceCode.commitWorkingCopy();
-    delete this._muteSourceCodeEvents;
-  }
-
-  /**
-   * @override
-   */
-  onTextEditorContentSet() {
-    if (this._diff)
-      this._diff.updateDiffMarkersImmediately();
-    super.onTextEditorContentSet();
-    for (var message of this._allMessages())
-      this._addMessageToSource(message);
-    this._decorateAllTypes();
-  }
-
-  /**
-   * @return {!Array<!Workspace.UISourceCode.Message>}
-   */
-  _allMessages() {
-    return this._persistenceBinding ?
-        this._persistenceBinding.network.messages().concat(this._persistenceBinding.fileSystem.messages()) :
-        this._uiSourceCode.messages();
-  }
-
-  /**
-   * @override
-   * @param {!Common.TextRange} oldRange
-   * @param {!Common.TextRange} newRange
-   */
-  onTextChanged(oldRange, newRange) {
-    if (this._diff)
-      this._diff.updateDiffMarkersWhenPossible();
-    super.onTextChanged(oldRange, newRange);
-    this._errorPopoverHelper.hidePopover();
-    if (this._isSettingContent)
-      return;
-    this._muteSourceCodeEvents = true;
-    if (this.textEditor.isClean())
-      this._uiSourceCode.resetWorkingCopy();
-    else
-      this._uiSourceCode.setWorkingCopyGetter(this.textEditor.text.bind(this.textEditor));
-    delete this._muteSourceCodeEvents;
-  }
-
-  /**
-   * @param {!Common.Event} event
-   */
-  _onWorkingCopyChanged(event) {
-    if (this._muteSourceCodeEvents)
-      return;
-    this._innerSetContent(this._uiSourceCode.workingCopy());
-    this.onUISourceCodeContentChanged();
-  }
-
-  /**
-   * @param {!Common.Event} event
-   */
-  _onWorkingCopyCommitted(event) {
-    if (!this._muteSourceCodeEvents) {
-      this._innerSetContent(this._uiSourceCode.workingCopy());
-      this.onUISourceCodeContentChanged();
-    }
-    this.textEditor.markClean();
-    this._updateStyle();
-  }
-
-  _onBindingChanged() {
-    var binding = Persistence.persistence.binding(this._uiSourceCode);
-    if (binding === this._persistenceBinding)
-      return;
-    for (var message of this._allMessages())
-      this._removeMessageFromSource(message);
-    Common.EventTarget.removeEventListeners(this._messageAndDecorationListeners);
-
-    this._persistenceBinding = binding;
-
-    for (var message of this._allMessages())
-      this._addMessageToSource(message);
-    this._installMessageAndDecorationListeners();
-    this._updateStyle();
-    this._decorateAllTypes();
-    this.onBindingChanged();
-  }
-
-  /**
-   * @protected
-   */
-  onBindingChanged() {
-    // Overriden in subclasses.
-  }
-
-  _updateStyle() {
-    this.element.classList.toggle(
-        'source-frame-unsaved-committed-changes',
-        Persistence.persistence.hasUnsavedCommittedChanges(this._uiSourceCode));
-    this.setEditable(this._canEditSource());
-  }
-
-  onUISourceCodeContentChanged() {
-  }
-
-  _updateAutocomplete() {
-    this.textEditor.configureAutocomplete(
-        Common.moduleSetting('textEditorAutocompletion').get() ? this._autocompleteConfig : null);
-  }
-
-  /**
-   * @param {?UI.AutocompleteConfig} config
-   */
-  configureAutocomplete(config) {
-    this._autocompleteConfig = config;
-    this._updateAutocomplete();
-  }
-
-  /**
-   * @param {string} content
-   */
-  _innerSetContent(content) {
-    this._isSettingContent = true;
-    if (this._diff) {
-      var oldContent = this.textEditor.text();
-      this.setContent(content);
-      this._diff.highlightModifiedLines(oldContent, content);
-    } else {
-      this.setContent(content);
-    }
-    delete this._isSettingContent;
-  }
-
-  /**
-   * @override
-   * @return {!Promise}
-   */
-  populateTextAreaContextMenu(contextMenu, lineNumber, columnNumber) {
-    /**
-     * @this {Sources.UISourceCodeFrame}
-     */
-    function appendItems() {
-      contextMenu.appendApplicableItems(this._uiSourceCode);
-      contextMenu.appendApplicableItems(new Workspace.UILocation(this._uiSourceCode, lineNumber, columnNumber));
-      contextMenu.appendApplicableItems(this);
-    }
-
-    return super.populateTextAreaContextMenu(contextMenu, lineNumber, columnNumber).then(appendItems.bind(this));
-  }
-
-  /**
-   * @param {!Array.<!UI.Infobar|undefined>} infobars
-   */
-  attachInfobars(infobars) {
-    for (var i = infobars.length - 1; i >= 0; --i) {
-      var infobar = infobars[i];
-      if (!infobar)
-        continue;
-      this.element.insertBefore(infobar.element, this.element.children[0]);
-      infobar.setParentView(this);
-    }
-    this.doResize();
-  }
-
-  dispose() {
-    this.textEditor.dispose();
-    Common.moduleSetting('textEditorAutocompletion').removeChangeListener(this._updateAutocomplete, this);
-    this.detach();
-  }
-
-  /**
-   * @param {!Common.Event} event
-   */
-  _onMessageAdded(event) {
-    var message = /** @type {!Workspace.UISourceCode.Message} */ (event.data);
-    this._addMessageToSource(message);
-  }
-
-  /**
-   * @param {!Workspace.UISourceCode.Message} message
-   */
-  _addMessageToSource(message) {
-    if (!this.loaded)
-      return;
-    var lineNumber = message.lineNumber();
-    if (lineNumber >= this.textEditor.linesCount)
-      lineNumber = this.textEditor.linesCount - 1;
-    if (lineNumber < 0)
-      lineNumber = 0;
-
-    var messageBucket = this._rowMessageBuckets.get(lineNumber);
-    if (!messageBucket) {
-      messageBucket = new Sources.UISourceCodeFrame.RowMessageBucket(this, this.textEditor, lineNumber);
-      this._rowMessageBuckets.set(lineNumber, messageBucket);
-    }
-    messageBucket.addMessage(message);
-  }
-
-  /**
-   * @param {!Common.Event} event
-   */
-  _onMessageRemoved(event) {
-    var message = /** @type {!Workspace.UISourceCode.Message} */ (event.data);
-    this._removeMessageFromSource(message);
-  }
-
-  /**
-   * @param {!Workspace.UISourceCode.Message} message
-   */
-  _removeMessageFromSource(message) {
-    if (!this.loaded)
-      return;
-
-    var lineNumber = message.lineNumber();
-    if (lineNumber >= this.textEditor.linesCount)
-      lineNumber = this.textEditor.linesCount - 1;
-    if (lineNumber < 0)
-      lineNumber = 0;
-
-    var messageBucket = this._rowMessageBuckets.get(lineNumber);
-    if (!messageBucket)
-      return;
-    messageBucket.removeMessage(message);
-    if (!messageBucket.uniqueMessagesCount()) {
-      messageBucket.detachFromEditor();
-      this._rowMessageBuckets.delete(lineNumber);
-    }
-  }
-
-  /**
-   * @param {!Element} target
-   * @param {!Event} event
-   * @return {(!Element|undefined)}
-   */
-  _getErrorAnchor(target, event) {
-    var element = target.enclosingNodeOrSelfWithClass('text-editor-line-decoration-icon') ||
-        target.enclosingNodeOrSelfWithClass('text-editor-line-decoration-wave');
-    if (!element)
-      return;
-    this._errorWavePopoverAnchor = new AnchorBox(event.clientX, event.clientY, 1, 1);
-    return element;
-  }
-
-  /**
-   * @param {!Element} anchor
-   * @param {!UI.Popover} popover
-   */
-  _showErrorPopover(anchor, popover) {
-    var messageBucket = anchor.enclosingNodeOrSelfWithClass('text-editor-line-decoration')._messageBucket;
-    var messagesOutline = messageBucket.messagesDescription();
-    var popoverAnchor =
-        anchor.enclosingNodeOrSelfWithClass('text-editor-line-decoration-icon') ? anchor : this._errorWavePopoverAnchor;
-    popover.showForAnchor(messagesOutline, popoverAnchor);
-  }
-
-  _updateBucketDecorations() {
-    for (var bucket of this._rowMessageBuckets.values())
-      bucket._updateDecoration();
-  }
-
-  /**
-   * @param {!Common.Event} event
-   */
-  _onLineDecorationAdded(event) {
-    var marker = /** @type {!Workspace.UISourceCode.LineMarker} */ (event.data);
-    this._decorateTypeThrottled(marker.type());
-  }
-
-  /**
-   * @param {!Common.Event} event
-   */
-  _onLineDecorationRemoved(event) {
-    var marker = /** @type {!Workspace.UISourceCode.LineMarker} */ (event.data);
-    this._decorateTypeThrottled(marker.type());
-  }
-
-  /**
-   * @param {string} type
-   */
-  _decorateTypeThrottled(type) {
-    if (this._typeDecorationsPending.has(type))
-      return;
-    this._typeDecorationsPending.add(type);
-    self.runtime.extensions(Sources.UISourceCodeFrame.LineDecorator)
-        .find(extension => extension.descriptor()['decoratorType'] === type)
-        .instance()
-        .then(decorator => {
-          this._typeDecorationsPending.delete(type);
-          decorator.decorate(
-              this._persistenceBinding ? this._persistenceBinding.network : this.uiSourceCode(), this.textEditor);
-        });
-  }
-
-  _decorateAllTypes() {
-    var extensions = self.runtime.extensions(Sources.UISourceCodeFrame.LineDecorator);
-    extensions.forEach(extension => this._decorateTypeThrottled(extension.descriptor()['decoratorType']));
-  }
-};
-
-Sources.UISourceCodeFrame._iconClassPerLevel = {};
-Sources.UISourceCodeFrame._iconClassPerLevel[Workspace.UISourceCode.Message.Level.Error] = 'smallicon-error';
-Sources.UISourceCodeFrame._iconClassPerLevel[Workspace.UISourceCode.Message.Level.Warning] = 'smallicon-warning';
-
-Sources.UISourceCodeFrame._bubbleTypePerLevel = {};
-Sources.UISourceCodeFrame._bubbleTypePerLevel[Workspace.UISourceCode.Message.Level.Error] = 'error';
-Sources.UISourceCodeFrame._bubbleTypePerLevel[Workspace.UISourceCode.Message.Level.Warning] = 'warning';
-
-Sources.UISourceCodeFrame._lineClassPerLevel = {};
-Sources.UISourceCodeFrame._lineClassPerLevel[Workspace.UISourceCode.Message.Level.Error] =
-    'text-editor-line-with-error';
-Sources.UISourceCodeFrame._lineClassPerLevel[Workspace.UISourceCode.Message.Level.Warning] =
-    'text-editor-line-with-warning';
-
-/**
- * @interface
- */
-Sources.UISourceCodeFrame.LineDecorator = function() {};
-
-Sources.UISourceCodeFrame.LineDecorator.prototype = {
-  /**
-   * @param {!Workspace.UISourceCode} uiSourceCode
-   * @param {!TextEditor.CodeMirrorTextEditor} textEditor
-   */
-  decorate(uiSourceCode, textEditor) {}
-};
-
-/**
- * @unrestricted
- */
-Sources.UISourceCodeFrame.RowMessage = class {
-  /**
-   * @param {!Workspace.UISourceCode.Message} message
-   */
-  constructor(message) {
-    this._message = message;
-    this._repeatCount = 1;
-    this.element = createElementWithClass('div', 'text-editor-row-message');
-    this._icon = this.element.createChild('label', '', 'dt-icon-label');
-    this._icon.type = Sources.UISourceCodeFrame._iconClassPerLevel[message.level()];
-    this._repeatCountElement = this.element.createChild('label', 'message-repeat-count hidden', 'dt-small-bubble');
-    this._repeatCountElement.type = Sources.UISourceCodeFrame._bubbleTypePerLevel[message.level()];
-    var linesContainer = this.element.createChild('div', 'text-editor-row-message-lines');
-    var lines = this._message.text().split('\n');
-    for (var i = 0; i < lines.length; ++i) {
-      var messageLine = linesContainer.createChild('div');
-      messageLine.textContent = lines[i];
-    }
-  }
-
-  /**
-   * @return {!Workspace.UISourceCode.Message}
-   */
-  message() {
-    return this._message;
-  }
-
-  /**
-   * @return {number}
-   */
-  repeatCount() {
-    return this._repeatCount;
-  }
-
-  setRepeatCount(repeatCount) {
-    if (this._repeatCount === repeatCount)
-      return;
-    this._repeatCount = repeatCount;
-    this._updateMessageRepeatCount();
-  }
-
-  _updateMessageRepeatCount() {
-    this._repeatCountElement.textContent = this._repeatCount;
-    var showRepeatCount = this._repeatCount > 1;
-    this._repeatCountElement.classList.toggle('hidden', !showRepeatCount);
-    this._icon.classList.toggle('hidden', showRepeatCount);
-  }
-};
-
-/**
- * @unrestricted
- */
-Sources.UISourceCodeFrame.RowMessageBucket = class {
-  /**
-   * @param {!Sources.UISourceCodeFrame} sourceFrame
-   * @param {!TextEditor.CodeMirrorTextEditor} textEditor
-   * @param {number} lineNumber
-   */
-  constructor(sourceFrame, textEditor, lineNumber) {
-    this._sourceFrame = sourceFrame;
-    this.textEditor = textEditor;
-    this._lineHandle = textEditor.textEditorPositionHandle(lineNumber, 0);
-    this._decoration = createElementWithClass('div', 'text-editor-line-decoration');
-    this._decoration._messageBucket = this;
-    this._wave = this._decoration.createChild('div', 'text-editor-line-decoration-wave');
-    this._icon = this._wave.createChild('label', 'text-editor-line-decoration-icon', 'dt-icon-label');
-    this._hasDecoration = false;
-
-    this._messagesDescriptionElement = createElementWithClass('div', 'text-editor-messages-description-container');
-    /** @type {!Array.<!Sources.UISourceCodeFrame.RowMessage>} */
-    this._messages = [];
-
-    this._level = null;
-  }
-
-  /**
-   * @param {number} lineNumber
-   * @param {number} columnNumber
-   */
-  _updateWavePosition(lineNumber, columnNumber) {
-    lineNumber = Math.min(lineNumber, this.textEditor.linesCount - 1);
-    var lineText = this.textEditor.line(lineNumber);
-    columnNumber = Math.min(columnNumber, lineText.length);
-    var lineIndent = Common.TextUtils.lineIndent(lineText).length;
-    if (this._hasDecoration)
-      this.textEditor.removeDecoration(this._decoration, lineNumber);
-    this._hasDecoration = true;
-    this.textEditor.addDecoration(this._decoration, lineNumber, Math.max(columnNumber - 1, lineIndent));
-  }
-
-  /**
-   * @return {!Element}
-   */
-  messagesDescription() {
-    this._messagesDescriptionElement.removeChildren();
-    for (var i = 0; i < this._messages.length; ++i)
-      this._messagesDescriptionElement.appendChild(this._messages[i].element);
-
-    return this._messagesDescriptionElement;
-  }
-
-  detachFromEditor() {
-    var position = this._lineHandle.resolve();
-    if (!position)
-      return;
-    var lineNumber = position.lineNumber;
-    if (this._level)
-      this.textEditor.toggleLineClass(lineNumber, Sources.UISourceCodeFrame._lineClassPerLevel[this._level], false);
-    if (this._hasDecoration)
-      this.textEditor.removeDecoration(this._decoration, lineNumber);
-    this._hasDecoration = false;
-  }
-
-  /**
-   * @return {number}
-   */
-  uniqueMessagesCount() {
-    return this._messages.length;
-  }
-
-  /**
-   * @param {!Workspace.UISourceCode.Message} message
-   */
-  addMessage(message) {
-    for (var i = 0; i < this._messages.length; ++i) {
-      var rowMessage = this._messages[i];
-      if (rowMessage.message().isEqual(message)) {
-        rowMessage.setRepeatCount(rowMessage.repeatCount() + 1);
-        return;
-      }
-    }
-
-    var rowMessage = new Sources.UISourceCodeFrame.RowMessage(message);
-    this._messages.push(rowMessage);
-    this._updateDecoration();
-  }
-
-  /**
-   * @param {!Workspace.UISourceCode.Message} message
-   */
-  removeMessage(message) {
-    for (var i = 0; i < this._messages.length; ++i) {
-      var rowMessage = this._messages[i];
-      if (!rowMessage.message().isEqual(message))
-        continue;
-      rowMessage.setRepeatCount(rowMessage.repeatCount() - 1);
-      if (!rowMessage.repeatCount())
-        this._messages.splice(i, 1);
-      this._updateDecoration();
-      return;
-    }
-  }
-
-  _updateDecoration() {
-    if (!this._sourceFrame.isEditorShowing())
-      return;
-    if (!this._messages.length)
-      return;
-    var position = this._lineHandle.resolve();
-    if (!position)
-      return;
-
-    var lineNumber = position.lineNumber;
-    var columnNumber = Number.MAX_VALUE;
-    var maxMessage = null;
-    for (var i = 0; i < this._messages.length; ++i) {
-      var message = this._messages[i].message();
-      columnNumber = Math.min(columnNumber, message.columnNumber());
-      if (!maxMessage || Workspace.UISourceCode.Message.messageLevelComparator(maxMessage, message) < 0)
-        maxMessage = message;
-    }
-    this._updateWavePosition(lineNumber, columnNumber);
-
-    if (this._level) {
-      this.textEditor.toggleLineClass(lineNumber, Sources.UISourceCodeFrame._lineClassPerLevel[this._level], false);
-      this._icon.type = '';
-    }
-    this._level = maxMessage.level();
-    if (!this._level)
-      return;
-    this.textEditor.toggleLineClass(lineNumber, Sources.UISourceCodeFrame._lineClassPerLevel[this._level], true);
-    this._icon.type = Sources.UISourceCodeFrame._iconClassPerLevel[this._level];
-  }
-};
-
-Workspace.UISourceCode.Message._messageLevelPriority = {
-  'Warning': 3,
-  'Error': 4
-};
-
-/**
- * @param {!Workspace.UISourceCode.Message} a
- * @param {!Workspace.UISourceCode.Message} b
- * @return {number}
- */
-Workspace.UISourceCode.Message.messageLevelComparator = function(a, b) {
-  return Workspace.UISourceCode.Message._messageLevelPriority[a.level()] -
-      Workspace.UISourceCode.Message._messageLevelPriority[b.level()];
-};