| // 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. |
| |
| 'use strict'; |
| |
| /** |
| * Search box. |
| * |
| * @param {element} element Root element of the search box. |
| * @constructor |
| */ |
| function SearchBox(element) { |
| /** |
| * Autocomplete List. |
| * @type {AutocompleteList} |
| */ |
| this.autocompleteList = new SearchBox.AutocompleteList(element.ownerDocument); |
| |
| /** |
| * Root element of the search box. |
| * @type {HTMLElement} |
| */ |
| this.element = element; |
| |
| /** |
| * Text input of the search box. |
| * @type {HTMLElement} |
| */ |
| this.inputElement = element.querySelector('input'); |
| |
| /** |
| * Clear button of the search box. |
| * @type {HTMLElement} |
| */ |
| this.clearButton = element.querySelector('.clear'); |
| |
| /** |
| * Text measure. |
| * @type {TextMeasure} |
| * @private |
| */ |
| this.textMeasure_ = new TextMeasure(this.inputElement); |
| |
| Object.freeze(this); |
| |
| // Register events. |
| this.inputElement.addEventListener('input', this.updateStyles_.bind(this)); |
| this.inputElement.addEventListener('keydown', this.onKeyDown_.bind(this)); |
| this.inputElement.addEventListener('focus', this.onFocus_.bind(this)); |
| this.inputElement.addEventListener('blur', this.onBlur_.bind(this)); |
| element.querySelector('.icon').addEventListener( |
| 'click', this.onIconClick_.bind(this)); |
| element.parentNode.appendChild(this.autocompleteList); |
| } |
| |
| /** |
| * Autocomplete list for search box. |
| * @param {HTMLDocument} document Document. |
| * @constructor |
| */ |
| SearchBox.AutocompleteList = function(document) { |
| var self = cr.ui.AutocompleteList.call(this); |
| self.__proto__ = SearchBox.AutocompleteList.prototype; |
| self.id = 'autocomplete-list'; |
| self.autoExpands = true; |
| self.itemConstructor = SearchBox.AutocompleteListItem_.bind(null, document); |
| self.addEventListener('mouseover', self.onMouseOver_.bind(self)); |
| return self; |
| }; |
| |
| SearchBox.AutocompleteList.prototype = { |
| __proto__: cr.ui.AutocompleteList.prototype |
| }; |
| |
| /** |
| * Do nothing when a suggestion is selected. |
| * @override |
| */ |
| SearchBox.AutocompleteList.prototype.handleSelectedSuggestion = function() {}; |
| |
| /** |
| * Change the selection by a mouse over instead of just changing the |
| * color of moused over element with :hover in CSS. Here's why: |
| * |
| * 1) The user selects an item A with up/down keys (item A is highlighted) |
| * 2) Then the user moves the cursor to another item B |
| * |
| * If we just change the color of moused over element (item B), both |
| * the item A and B are highlighted. This is bad. We should change the |
| * selection so only the item B is highlighted. |
| * |
| * @param {Event} event Event. |
| * @private |
| */ |
| SearchBox.AutocompleteList.prototype.onMouseOver_ = function(event) { |
| if (event.target.itemInfo) |
| this.selectedItem = event.target.itemInfo; |
| }; |
| |
| /** |
| * ListItem element for autocomple. |
| * |
| * @param {HTMLDocument} document Document. |
| * @param {Object} item An object representing a suggestion. |
| * @constructor |
| * @private |
| */ |
| SearchBox.AutocompleteListItem_ = function(document, item) { |
| var li = new cr.ui.ListItem(); |
| li.itemInfo = item; |
| |
| var icon = document.createElement('div'); |
| icon.className = 'detail-icon'; |
| |
| var text = document.createElement('div'); |
| text.className = 'detail-text'; |
| |
| if (item.isHeaderItem) { |
| icon.setAttribute('search-icon'); |
| text.innerHTML = |
| strf('SEARCH_DRIVE_HTML', util.htmlEscape(item.searchQuery)); |
| } else { |
| var iconType = FileType.getIcon(item.entry); |
| icon.setAttribute('file-type-icon', iconType); |
| // highlightedBaseName is a piece of HTML with meta characters properly |
| // escaped. See the comment at fileBrowserPrivate.searchDriveMetadata(). |
| text.innerHTML = item.highlightedBaseName; |
| } |
| li.appendChild(icon); |
| li.appendChild(text); |
| return li; |
| }; |
| |
| /** |
| * Updates the size related style. |
| */ |
| SearchBox.prototype.updateSizeRelatedStyle = function() { |
| // Hide the search box if there is not enough space. |
| this.element.classList.toggle( |
| 'too-short', |
| this.element.clientWidth < 100); |
| }; |
| |
| /** |
| * Clears the search query. |
| */ |
| SearchBox.prototype.clear = function() { |
| this.inputElement.value = ''; |
| this.updateStyles_(); |
| }; |
| |
| /** |
| * Handles a focus event of the search box. |
| * @private |
| */ |
| SearchBox.prototype.onFocus_ = function() { |
| this.element.classList.toggle('has-cursor', true); |
| this.inputElement.tabIndex = '99'; // See: go/filesapp-tabindex. |
| this.autocompleteList.attachToInput(this.inputElement); |
| }; |
| |
| /** |
| * Handles a blur event of the search box. |
| * @private |
| */ |
| SearchBox.prototype.onBlur_ = function() { |
| this.element.classList.toggle('has-cursor', false); |
| this.inputElement.tabIndex = '-1'; |
| this.autocompleteList.detach(); |
| }; |
| |
| /** |
| * Handles a keydown event of the search box. |
| * @private |
| */ |
| SearchBox.prototype.onKeyDown_ = function() { |
| // Handle only Esc key now. |
| if (event.keyCode != 27 || this.inputElement.value) |
| return; |
| this.inputElement.blur(); |
| }; |
| |
| /** |
| * Handles a click event of the search icon. |
| * @private |
| */ |
| SearchBox.prototype.onIconClick_ = function() { |
| this.inputElement.focus(); |
| }; |
| |
| /** |
| * Updates styles of the search box. |
| * @private |
| */ |
| SearchBox.prototype.updateStyles_ = function() { |
| this.element.classList.toggle('has-text', |
| !!this.inputElement.value); |
| var width = this.textMeasure_.getWidth(this.inputElement.value) + |
| 16 /* Extra space to allow leeway. */; |
| this.inputElement.style.width = width + 'px'; |
| }; |