www.gusucode.com > 一个基于extjs的强大聊天插件源码程序 > 一个基于extjs的强大聊天插件/extjame/ext-jame/js/ext2/source/widgets/form/BasicForm.js
/*
* Ext JS Library 2.0.2
* Copyright(c) 2006-2008, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
/**
* @class Ext.form.BasicForm
* @extends Ext.util.Observable
* Supplies the functionality to do "actions" on forms and initialize Ext.form.Field types on existing markup.
* <br><br>
* By default, Ext Forms are submitted through Ajax, using {@link Ext.form.Action}.
* To enable normal browser submission of an Ext Form, use the {@link #standardSubmit} config option.
* @constructor
* @param {Mixed} el The form element or its id
* @param {Object} config Configuration options
*/
Ext.form.BasicForm = function(el, config){
Ext.apply(this, config);
/*
* The Ext.form.Field items in this form.
* @type MixedCollection
*/
this.items = new Ext.util.MixedCollection(false, function(o){
return o.id || (o.id = Ext.id());
});
this.addEvents(
/**
* @event beforeaction
* Fires before any action is performed. Return false to cancel the action.
* @param {Form} this
* @param {Action} action The {@link Ext.form.Action} to be performed
*/
'beforeaction',
/**
* @event actionfailed
* Fires when an action fails.
* @param {Form} this
* @param {Action} action The {@link Ext.form.Action} that failed
*/
'actionfailed',
/**
* @event actioncomplete
* Fires when an action is completed.
* @param {Form} this
* @param {Action} action The {@link Ext.form.Action} that completed
*/
'actioncomplete'
);
if(el){
this.initEl(el);
}
Ext.form.BasicForm.superclass.constructor.call(this);
};
Ext.extend(Ext.form.BasicForm, Ext.util.Observable, {
/**
* @cfg {String} method
* The request method to use (GET or POST) for form actions if one isn't supplied in the action options.
*/
/**
* @cfg {DataReader} reader
* An Ext.data.DataReader (e.g. {@link Ext.data.XmlReader}) to be used to read data when executing "load" actions.
* This is optional as there is built-in support for processing JSON.
*/
/**
* @cfg {DataReader} errorReader
* An Ext.data.DataReader (e.g. {@link Ext.data.XmlReader}) to be used to read data when reading validation errors on "submit" actions.
* This is completely optional as there is built-in support for processing JSON.
*/
/**
* @cfg {String} url
* The URL to use for form actions if one isn't supplied in the action options.
*/
/**
* @cfg {Boolean} fileUpload
* Set to true if this form is a file upload.
*/
/**
* @cfg {Object} baseParams
* Parameters to pass with all requests. e.g. baseParams: {id: '123', foo: 'bar'}.
*/
/**
* @cfg {Number} timeout Timeout for form actions in seconds (default is 30 seconds).
*/
timeout: 30,
// private
activeAction : null,
/**
* @cfg {Boolean} trackResetOnLoad If set to true, form.reset() resets to the last loaded
* or setValues() data instead of when the form was first created.
*/
trackResetOnLoad : false,
/**
* @cfg {Boolean} standardSubmit If set to true, standard HTML form submits are used instead of XHR (Ajax) style
* form submissions. (defaults to false)
*/
/**
* By default wait messages are displayed with Ext.MessageBox.wait. You can target a specific
* element by passing it or its id or mask the form itself by passing in true.
* @type Mixed
* @property waitMsgTarget
*/
// private
initEl : function(el){
this.el = Ext.get(el);
this.id = this.el.id || Ext.id();
if(!this.standardSubmit){
this.el.on('submit', this.onSubmit, this);
}
this.el.addClass('x-form');
},
/**
* Get the HTML form Element
* @return Ext.Element
*/
getEl: function(){
return this.el;
},
// private
onSubmit : function(e){
e.stopEvent();
},
// private
destroy: function() {
this.items.each(function(f){
Ext.destroy(f);
});
if(this.el){
this.el.removeAllListeners();
this.el.remove();
}
this.purgeListeners();
},
/**
* Returns true if client-side validation on the form is successful.
* @return Boolean
*/
isValid : function(){
var valid = true;
this.items.each(function(f){
if(!f.validate()){
valid = false;
}
});
return valid;
},
/**
* Returns true if any fields in this form have changed since their original load.
* @return Boolean
*/
isDirty : function(){
var dirty = false;
this.items.each(function(f){
if(f.isDirty()){
dirty = true;
return false;
}
});
return dirty;
},
/**
* Performs a predefined action ({@link Ext.form.Action.Submit} or
* {@link Ext.form.Action.Load}) or a custom extension of {@link Ext.form.Action}
* to perform application-specific processing.
* @param {String/Object} actionName The name of the predefined action type,
* or instance of {@link Ext.form.Action} to perform.
* @param {Object} options (optional) The options to pass to the {@link Ext.form.Action}.
* All of the config options listed below are supported by both the submit
* and load actions unless otherwise noted (custom actions could also accept
* other config options):<ul>
* <li><b>url</b> : String<p style="margin-left:1em">The url for the action (defaults
* to the form's url.)</p></li>
* <li><b>method</b> : String<p style="margin-left:1em">The form method to use (defaults
* to the form's method, or POST if not defined)</p></li>
* <li><b>params</b> : String/Object<p style="margin-left:1em">The params to pass
* (defaults to the form's baseParams, or none if not defined)</p></li>
* <li><b>success</b> : Function<p style="margin-left:1em">The callback that will
* be invoked after a successful response. Note that this is HTTP success
* (the transaction was sent and received correctly), but the resulting response data
* can still contain data errors. The function is passed the following parameters:<ul>
* <li><code>form</code> : Ext.form.BasicForm<div class="sub-desc">The form that requested the action</div></li>
* <li><code>action</code> : Ext.form.Action<div class="sub-desc">The Action class. The {@link Ext.form.Action#result result}
* property of this object may be examined to perform custom postprocessing.</div></li>
* </ul></p></li>
* <li><b>failure</b> : Function<p style="margin-left:1em">The callback that will
* be invoked after a failed transaction attempt. Note that this is HTTP failure,
* which means a non-successful HTTP code was returned from the server. The function
* is passed the following parameters:<ul>
* <li><code>form</code> : Ext.form.BasicForm<div class="sub-desc">The form that requested the action</div></li>
* <li><code>action</code> : Ext.form.Action<div class="sub-desc">The Action class. If an Ajax
* error ocurred, the failure type will be in {@link Ext.form.Action#failureType failureType}. The {@link Ext.form.Action#result result}
* property of this object may be examined to perform custom postprocessing.</div></li>
* </ul></p></li>
* <li><b>scope</b> : Object<p style="margin-left:1em">The scope in which to call the
* callback functions (The <tt>this</tt> reference for the callback functions).</p></li>
* <li><b>clientValidation</b> : Boolean<p style="margin-left:1em">Submit Action only.
* Determines whether a Form's fields are validated in a final call to
* {@link Ext.form.BasicForm#isValid isValid} prior to submission. Set to <tt>false</tt>
* to prevent this. If undefined, pre-submission field validation is performed.</p></li></ul>
* @return {BasicForm} this
*/
doAction : function(action, options){
if(typeof action == 'string'){
action = new Ext.form.Action.ACTION_TYPES[action](this, options);
}
if(this.fireEvent('beforeaction', this, action) !== false){
this.beforeAction(action);
action.run.defer(100, action);
}
return this;
},
/**
* Shortcut to do a submit action.
* @param {Object} options The options to pass to the action (see {@link #doAction} for details)
* @return {BasicForm} this
*/
submit : function(options){
if(this.standardSubmit){
var v = this.isValid();
if(v){
this.el.dom.submit();
}
return v;
}
this.doAction('submit', options);
return this;
},
/**
* Shortcut to do a load action.
* @param {Object} options The options to pass to the action (see {@link #doAction} for details)
* @return {BasicForm} this
*/
load : function(options){
this.doAction('load', options);
return this;
},
/**
* Persists the values in this form into the passed Ext.data.Record object in a beginEdit/endEdit block.
* @param {Record} record The record to edit
* @return {BasicForm} this
*/
updateRecord : function(record){
record.beginEdit();
var fs = record.fields;
fs.each(function(f){
var field = this.findField(f.name);
if(field){
record.set(f.name, field.getValue());
}
}, this);
record.endEdit();
return this;
},
/**
* Loads an Ext.data.Record into this form.
* @param {Record} record The record to load
* @return {BasicForm} this
*/
loadRecord : function(record){
this.setValues(record.data);
return this;
},
// private
beforeAction : function(action){
var o = action.options;
if(o.waitMsg){
if(this.waitMsgTarget === true){
this.el.mask(o.waitMsg, 'x-mask-loading');
}else if(this.waitMsgTarget){
this.waitMsgTarget = Ext.get(this.waitMsgTarget);
this.waitMsgTarget.mask(o.waitMsg, 'x-mask-loading');
}else{
Ext.MessageBox.wait(o.waitMsg, o.waitTitle || this.waitTitle || 'Please Wait...');
}
}
},
// private
afterAction : function(action, success){
this.activeAction = null;
var o = action.options;
if(o.waitMsg){
if(this.waitMsgTarget === true){
this.el.unmask();
}else if(this.waitMsgTarget){
this.waitMsgTarget.unmask();
}else{
Ext.MessageBox.updateProgress(1);
Ext.MessageBox.hide();
}
}
if(success){
if(o.reset){
this.reset();
}
Ext.callback(o.success, o.scope, [this, action]);
this.fireEvent('actioncomplete', this, action);
}else{
Ext.callback(o.failure, o.scope, [this, action]);
this.fireEvent('actionfailed', this, action);
}
},
/**
* Find a Ext.form.Field in this form by id, dataIndex, name or hiddenName.
* @param {String} id The value to search for
* @return Field
*/
findField : function(id){
var field = this.items.get(id);
if(!field){
this.items.each(function(f){
if(f.isFormField && (f.dataIndex == id || f.id == id || f.getName() == id)){
field = f;
return false;
}
});
}
return field || null;
},
/**
* Mark fields in this form invalid in bulk.
* @param {Array/Object} errors Either an array in the form [{id:'fieldId', msg:'The message'},...] or an object hash of {id: msg, id2: msg2}
* @return {BasicForm} this
*/
markInvalid : function(errors){
if(Ext.isArray(errors)){
for(var i = 0, len = errors.length; i < len; i++){
var fieldError = errors[i];
var f = this.findField(fieldError.id);
if(f){
f.markInvalid(fieldError.msg);
}
}
}else{
var field, id;
for(id in errors){
if(typeof errors[id] != 'function' && (field = this.findField(id))){
field.markInvalid(errors[id]);
}
}
}
return this;
},
/**
* Set values for fields in this form in bulk.
* @param {Array/Object} values Either an array in the form:<br><br><code><pre>
[{id:'clientName', value:'Fred. Olsen Lines'},
{id:'portOfLoading', value:'FXT'},
{id:'portOfDischarge', value:'OSL'} ]</pre></code><br><br>
* or an object hash of the form:<br><br><code><pre>
{
clientName: 'Fred. Olsen Lines',
portOfLoading: 'FXT',
portOfDischarge: 'OSL'
}</pre></code><br>
* @return {BasicForm} this
*/
setValues : function(values){
if(Ext.isArray(values)){ // array of objects
for(var i = 0, len = values.length; i < len; i++){
var v = values[i];
var f = this.findField(v.id);
if(f){
f.setValue(v.value);
if(this.trackResetOnLoad){
f.originalValue = f.getValue();
}
}
}
}else{ // object hash
var field, id;
for(id in values){
if(typeof values[id] != 'function' && (field = this.findField(id))){
field.setValue(values[id]);
if(this.trackResetOnLoad){
field.originalValue = field.getValue();
}
}
}
}
return this;
},
/**
* Returns the fields in this form as an object with key/value pairs as they would be submitted using a standard form submit.
* If multiple fields exist with the same name they are returned as an array.
* @param {Boolean} asString (optional) false to return the the values as an object (defaults to returning as a string)
* @return {String/Object}
*/
getValues : function(asString){
var fs = Ext.lib.Ajax.serializeForm(this.el.dom);
if(asString === true){
return fs;
}
return Ext.urlDecode(fs);
},
/**
* Clears all invalid messages in this form.
* @return {BasicForm} this
*/
clearInvalid : function(){
this.items.each(function(f){
f.clearInvalid();
});
return this;
},
/**
* Resets this form.
* @return {BasicForm} this
*/
reset : function(){
this.items.each(function(f){
f.reset();
});
return this;
},
/**
* Add Ext.form components to this form.
* @param {Field} field1
* @param {Field} field2 (optional)
* @param {Field} etc (optional)
* @return {BasicForm} this
*/
add : function(){
this.items.addAll(Array.prototype.slice.call(arguments, 0));
return this;
},
/**
* Removes a field from the items collection (does NOT remove its markup).
* @param {Field} field
* @return {BasicForm} this
*/
remove : function(field){
this.items.remove(field);
return this;
},
/**
* Looks at the fields in this form, checks them for an id attribute,
* and calls applyTo on the existing dom element with that id.
* @return {BasicForm} this
*/
render : function(){
this.items.each(function(f){
if(f.isFormField && !f.rendered && document.getElementById(f.id)){ // if the element exists
f.applyToMarkup(f.id);
}
});
return this;
},
/**
* Calls {@link Ext#apply} for all fields in this form with the passed object.
* @param {Object} values
* @return {BasicForm} this
*/
applyToFields : function(o){
this.items.each(function(f){
Ext.apply(f, o);
});
return this;
},
/**
* Calls {@link Ext#applyIf} for all field in this form with the passed object.
* @param {Object} values
* @return {BasicForm} this
*/
applyIfToFields : function(o){
this.items.each(function(f){
Ext.applyIf(f, o);
});
return this;
}
});
// back compat
Ext.BasicForm = Ext.form.BasicForm;