diff options
Diffstat (limited to 'contexts/data/lib/closure-library/closure/goog/ui/charcounter.js')
-rw-r--r-- | contexts/data/lib/closure-library/closure/goog/ui/charcounter.js | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/contexts/data/lib/closure-library/closure/goog/ui/charcounter.js b/contexts/data/lib/closure-library/closure/goog/ui/charcounter.js deleted file mode 100644 index 1903661..0000000 --- a/contexts/data/lib/closure-library/closure/goog/ui/charcounter.js +++ /dev/null @@ -1,201 +0,0 @@ -// Copyright 2006 The Closure Library Authors. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS-IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -/** - * @fileoverview Character counter widget implementation. - * - * @author eae@google.com (Emil A Eklund) - * @see ../demos/charcounter.html - */ - -goog.provide('goog.ui.CharCounter'); -goog.provide('goog.ui.CharCounter.Display'); - -goog.require('goog.dom'); -goog.require('goog.events'); -goog.require('goog.events.EventTarget'); -goog.require('goog.events.InputHandler'); - - - -/** - * CharCounter widget. Counts the number of characters in a input field or a - * text box and displays the number of additional characters that may be - * entered before the maximum length is reached. - * - * @extends {goog.events.EventTarget} - * @param {HTMLInputElement|HTMLTextAreaElement} elInput Input or text area - * element to count the number of characters in. You can pass in null - * for this if you don't want to expose the number of chars remaining. - * @param {Element} elCount HTML element to display the remaining number of - * characters in. - * @param {number} maxLength The maximum length. - * @param {goog.ui.CharCounter.Display=} opt_displayMode Display mode for this - * char counter. Defaults to {@link goog.ui.CharCounter.Display.REMAINING}. - * @constructor - */ -goog.ui.CharCounter = function(elInput, elCount, maxLength, opt_displayMode) { - goog.events.EventTarget.call(this); - - /** - * Input or text area element to count the number of characters in. - * @type {HTMLInputElement|HTMLTextAreaElement} - * @private - */ - this.elInput_ = elInput; - - /** - * HTML element to display the remaining number of characters in. - * @type {Element} - * @private - */ - this.elCount_ = elCount; - - /** - * The maximum length. - * @type {number} - * @private - */ - this.maxLength_ = maxLength; - - /** - * The display mode for this char counter. - * @type {!goog.ui.CharCounter.Display} - * @private - */ - this.display_ = opt_displayMode || goog.ui.CharCounter.Display.REMAINING; - - elInput.maxLength = maxLength; - - /** - * The input handler that provides the input event. - * @type {goog.events.InputHandler} - * @private - */ - this.inputHandler_ = new goog.events.InputHandler(elInput); - - goog.events.listen(this.inputHandler_, - goog.events.InputHandler.EventType.INPUT, this.onChange_, false, this); - - this.checkLength_(); -}; -goog.inherits(goog.ui.CharCounter, goog.events.EventTarget); - - -/** - * Display mode for the char counter. - * @enum {number} - */ -goog.ui.CharCounter.Display = { - /** Widget displays the number of characters remaining (the default). */ - REMAINING: 0, - /** Widget displays the number of characters entered. */ - INCREMENTAL: 1 -}; - - -/** - * Sets the maximum length. - * - * @param {number} maxLength The maximum length. - */ -goog.ui.CharCounter.prototype.setMaxLength = function(maxLength) { - this.maxLength_ = maxLength; - this.elInput_.maxLength = maxLength; - this.checkLength_(); -}; - - -/** - * Returns the maximum length. - * - * @return {number} The maximum length. - */ -goog.ui.CharCounter.prototype.getMaxLength = function() { - return this.maxLength_; -}; - - -/** - * Sets the display mode. - * - * @param {!goog.ui.CharCounter.Display} displayMode The display mode. - */ -goog.ui.CharCounter.prototype.setDisplayMode = function(displayMode) { - this.display_ = displayMode; - this.checkLength_(); -}; - - -/** - * Returns the display mode. - * - * @return {!goog.ui.CharCounter.Display} The display mode. - */ -goog.ui.CharCounter.prototype.getDisplayMode = function() { - return this.display_; -}; - - -/** - * Change event handler for input field. - * - * @param {goog.events.BrowserEvent} event Change event. - * @private - */ -goog.ui.CharCounter.prototype.onChange_ = function(event) { - this.checkLength_(); -}; - - -/** - * Checks length of text in input field and updates the counter. Truncates text - * if the maximum lengths is exceeded. - * - * @private - */ -goog.ui.CharCounter.prototype.checkLength_ = function() { - var count = this.elInput_.value.length; - - // There's no maxlength property for textareas so instead we truncate the - // text if it gets too long. It's also used to truncate the text in a input - // field if the maximum length is changed. - if (count > this.maxLength_) { - - var scrollTop = this.elInput_.scrollTop; - var scrollLeft = this.elInput_.scrollLeft; - - this.elInput_.value = this.elInput_.value.substring(0, this.maxLength_); - count = this.maxLength_; - - this.elInput_.scrollTop = scrollTop; - this.elInput_.scrollLeft = scrollLeft; - } - - if (this.elCount_) { - var incremental = this.display_ == goog.ui.CharCounter.Display.INCREMENTAL; - goog.dom.setTextContent( - this.elCount_, - /** @type {string} */(incremental ? count : this.maxLength_ - count)); - } -}; - - -/** @override */ -goog.ui.CharCounter.prototype.disposeInternal = function() { - goog.ui.CharCounter.superClass_.disposeInternal.call(this); - delete this.elInput_; - this.inputHandler_.dispose(); - this.inputHandler_ = null; -}; |