goog.provide('ol.dom.Input');
goog.provide('ol.dom.InputProperty');
goog.require('goog.asserts');
goog.require('goog.events');
goog.require('goog.events.EventType');
goog.require('ol.Object');
/**
* @enum {string}
*/
ol.dom.InputProperty = {
VALUE: 'value',
CHECKED: 'checked'
};
/**
* @classdesc
* Helper class for binding HTML input to an {@link ol.Object}.
*
* Example:
*
* // bind a checkbox with id 'visible' to a layer's visibility
* var visible = new ol.dom.Input(document.getElementById('visible'));
* visible.bindTo('checked', layer, 'visible');
*
* @constructor
* @extends {ol.Object}
* @param {Element} target Target element.
* @api
*/
ol.dom.Input = function(target) {
goog.base(this);
/**
* @private
* @type {HTMLInputElement}
*/
this.target_ = /** @type {HTMLInputElement} */ (target);
goog.events.listen(this.target_,
[goog.events.EventType.CHANGE, goog.events.EventType.INPUT],
this.handleInputChanged_, false, this);
goog.events.listen(this,
ol.Object.getChangeEventType(ol.dom.InputProperty.VALUE),
this.handleValueChanged_, false, this);
goog.events.listen(this,
ol.Object.getChangeEventType(ol.dom.InputProperty.CHECKED),
this.handleCheckedChanged_, false, this);
};
goog.inherits(ol.dom.Input, ol.Object);
/**
* If the input is a checkbox, return whether or not the checkbox is checked.
* @return {boolean|undefined} The checked state of the Input.
* @observable
* @api
*/
ol.dom.Input.prototype.getChecked = function() {
return /** @type {boolean} */ (this.get(ol.dom.InputProperty.CHECKED));
};
goog.exportProperty(
ol.dom.Input.prototype,
'getChecked',
ol.dom.Input.prototype.getChecked);
/**
* Get the value of the input.
* @return {string|undefined} The value of the Input.
* @observable
* @api
*/
ol.dom.Input.prototype.getValue = function() {
return /** @type {string} */ (this.get(ol.dom.InputProperty.VALUE));
};
goog.exportProperty(
ol.dom.Input.prototype,
'getValue',
ol.dom.Input.prototype.getValue);
/**
* Sets the value of the input.
* @param {string} value The value of the Input.
* @observable
* @api
*/
ol.dom.Input.prototype.setValue = function(value) {
this.set(ol.dom.InputProperty.VALUE, value);
};
goog.exportProperty(
ol.dom.Input.prototype,
'setValue',
ol.dom.Input.prototype.setValue);
/**
* Set whether or not a checkbox is checked.
* @param {boolean} checked The checked state of the Input.
* @observable
* @api
*/
ol.dom.Input.prototype.setChecked = function(checked) {
this.set(ol.dom.InputProperty.CHECKED, checked);
};
goog.exportProperty(
ol.dom.Input.prototype,
'setChecked',
ol.dom.Input.prototype.setChecked);
/**
* @param {goog.events.BrowserEvent} browserEvent Browser event.
* @private
*/
ol.dom.Input.prototype.handleInputChanged_ = function(browserEvent) {
goog.asserts.assert(browserEvent.currentTarget == this.target_);
var target = this.target_;
if (target.type === 'checkbox' || target.type === 'radio') {
this.setChecked(target.checked);
} else {
this.setValue(target.value);
}
};
/**
* @param {goog.events.Event} event Change event.
* @private
*/
ol.dom.Input.prototype.handleCheckedChanged_ = function(event) {
this.target_.checked = /** @type {boolean} */ (this.getChecked());
};
/**
* @param {goog.events.Event} event Change event.
* @private
*/
ol.dom.Input.prototype.handleValueChanged_ = function(event) {
this.target_.value = /** @type {string} */ (this.getValue());
};