diff options
Diffstat (limited to 'framework/Web/Javascripts/prototype/form.js')
| -rw-r--r-- | framework/Web/Javascripts/prototype/form.js | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/framework/Web/Javascripts/prototype/form.js b/framework/Web/Javascripts/prototype/form.js new file mode 100644 index 00000000..92a5d91a --- /dev/null +++ b/framework/Web/Javascripts/prototype/form.js @@ -0,0 +1,299 @@ +var Field = {
+ clear: function() {
+ for (var i = 0; i < arguments.length; i++)
+ $(arguments[i]).value = '';
+ },
+
+ focus: function(element) {
+ $(element).focus();
+ },
+
+ present: function() {
+ for (var i = 0; i < arguments.length; i++)
+ if ($(arguments[i]).value == '') return false;
+ return true;
+ },
+
+ select: function(element) {
+ $(element).select();
+ },
+
+ activate: function(element) {
+ $(element).focus();
+ $(element).select();
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Form = {
+ serialize: function(form) {
+ var elements = Form.getElements($(form));
+ var queryComponents = new Array();
+
+ for (var i = 0; i < elements.length; i++) {
+ var queryComponent = Form.Element.serialize(elements[i]);
+ if (queryComponent)
+ queryComponents.push(queryComponent);
+ }
+
+ return queryComponents.join('&');
+ },
+
+ getElements: function(form) {
+ var form = $(form);
+ var elements = new Array();
+
+ for (tagName in Form.Element.Serializers) {
+ var tagElements = form.getElementsByTagName(tagName);
+ for (var j = 0; j < tagElements.length; j++)
+ elements.push(tagElements[j]);
+ }
+ return elements;
+ },
+
+ getInputs: function(form, typeName, name) {
+ var form = $(form);
+ var inputs = form.getElementsByTagName('input');
+
+ if (!typeName && !name)
+ return inputs;
+
+ var matchingInputs = new Array();
+ for (var i = 0; i < inputs.length; i++) {
+ var input = inputs[i];
+ if ((typeName && input.type != typeName) ||
+ (name && input.name != name))
+ continue;
+ matchingInputs.push(input);
+ }
+
+ return matchingInputs;
+ },
+
+ disable: function(form) {
+ var elements = Form.getElements(form);
+ for (var i = 0; i < elements.length; i++) {
+ var element = elements[i];
+ element.blur();
+ element.disabled = 'true';
+ }
+ },
+
+ enable: function(form) {
+ var elements = Form.getElements(form);
+ for (var i = 0; i < elements.length; i++) {
+ var element = elements[i];
+ element.disabled = '';
+ }
+ },
+
+ focusFirstElement: function(form) {
+ var form = $(form);
+ var elements = Form.getElements(form);
+ for (var i = 0; i < elements.length; i++) {
+ var element = elements[i];
+ if (element.type != 'hidden' && !element.disabled) {
+ Field.activate(element);
+ break;
+ }
+ }
+ },
+
+ reset: function(form) {
+ $(form).reset();
+ }
+}
+
+Form.Element = {
+ serialize: function(element) {
+ var element = $(element);
+ var method = element.tagName.toLowerCase();
+ var parameter = Form.Element.Serializers[method](element);
+
+ if (parameter)
+ return encodeURIComponent(parameter[0]) + '=' +
+ encodeURIComponent(parameter[1]);
+ },
+
+ getValue: function(element) {
+ var element = $(element);
+ var method = element.tagName.toLowerCase();
+ var parameter = Form.Element.Serializers[method](element);
+
+ if (parameter)
+ return parameter[1];
+ }
+}
+
+Form.Element.Serializers = {
+ input: function(element) {
+ switch (element.type.toLowerCase()) {
+ case 'submit':
+ case 'hidden':
+ case 'password':
+ case 'text':
+ return Form.Element.Serializers.textarea(element);
+ case 'checkbox':
+ case 'radio':
+ return Form.Element.Serializers.inputSelector(element);
+ }
+ return false;
+ },
+
+ inputSelector: function(element) {
+ if (element.checked)
+ return [element.name, element.value];
+ },
+
+ textarea: function(element) {
+ return [element.name, element.value];
+ },
+
+ select: function(element) {
+ return Form.Element.Serializers[element.type == 'select-one' ?
+ 'selectOne' : 'selectMany'](element);
+ },
+
+ selectOne: function(element) {
+ var value = '', opt, index = element.selectedIndex;
+ if (index >= 0) {
+ opt = element.options[index];
+ value = opt.value;
+ if (!value && !('value' in opt))
+ value = opt.text;
+ }
+ return [element.name, value];
+ },
+
+ selectMany: function(element) {
+ var value = new Array();
+ for (var i = 0; i < element.length; i++) {
+ var opt = element.options[i];
+ if (opt.selected) {
+ var optValue = opt.value;
+ if (!optValue && !('value' in opt))
+ optValue = opt.text;
+ value.push(optValue);
+ }
+ }
+ return [element.name, value];
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var $F = Form.Element.getValue;
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.TimedObserver = function() {}
+Abstract.TimedObserver.prototype = {
+ initialize: function(element, frequency, callback) {
+ this.frequency = frequency;
+ this.element = $(element);
+ this.callback = callback;
+
+ this.lastValue = this.getValue();
+ this.registerCallback();
+ },
+
+ registerCallback: function() {
+ setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+ },
+
+ onTimerEvent: function() {
+ var value = this.getValue();
+ if (this.lastValue != value) {
+ this.callback(this.element, value);
+ this.lastValue = value;
+ }
+ }
+}
+
+Form.Element.Observer = Class.create();
+Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+ getValue: function() {
+ return Form.Element.getValue(this.element);
+ }
+});
+
+Form.Observer = Class.create();
+Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+ getValue: function() {
+ return Form.serialize(this.element);
+ }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.EventObserver = function() {}
+Abstract.EventObserver.prototype = {
+ initialize: function(element, callback) {
+ this.element = $(element);
+ this.callback = callback;
+
+ this.lastValue = this.getValue();
+ if (this.element.tagName.toLowerCase() == 'form')
+ this.registerFormCallbacks();
+ else
+ this.registerCallback(this.element);
+ },
+
+ onElementEvent: function() {
+ var value = this.getValue();
+ if (this.lastValue != value) {
+ this.callback(this.element, value);
+ this.lastValue = value;
+ }
+ },
+
+ registerFormCallbacks: function() {
+ var elements = Form.getElements(this.element);
+ for (var i = 0; i < elements.length; i++)
+ this.registerCallback(elements[i]);
+ },
+
+ registerCallback: function(element) {
+ if (element.type) {
+ switch (element.type.toLowerCase()) {
+ case 'checkbox':
+ case 'radio':
+ element.target = this;
+ element.prev_onclick = element.onclick || Prototype.emptyFunction;
+ element.onclick = function() {
+ this.prev_onclick();
+ this.target.onElementEvent();
+ }
+ break;
+ case 'password':
+ case 'text':
+ case 'textarea':
+ case 'select-one':
+ case 'select-multiple':
+ element.target = this;
+ element.prev_onchange = element.onchange || Prototype.emptyFunction;
+ element.onchange = function() {
+ this.prev_onchange();
+ this.target.onElementEvent();
+ }
+ break;
+ }
+ }
+ }
+}
+
+Form.Element.EventObserver = Class.create();
+Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+ getValue: function() {
+ return Form.Element.getValue(this.element);
+ }
+});
+
+Form.EventObserver = Class.create();
+Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+ getValue: function() {
+ return Form.serialize(this.element);
+ }
+});
+
|