FileUploadField.js
资源名称:ext-3.0.0.zip [点击查看]
上传用户:shuoshiled
上传日期:2018-01-28
资源大小:10124k
文件大小:4k
源码类别:
中间件编程
开发平台:
JavaScript
- /*!
- * Ext JS Library 3.0.0
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
- Ext.ns('Ext.ux.form');
- /**
- * @class Ext.ux.form.FileUploadField
- * @extends Ext.form.TextField
- * Creates a file upload field.
- * @xtype fileuploadfield
- */
- Ext.ux.form.FileUploadField = Ext.extend(Ext.form.TextField, {
- /**
- * @cfg {String} buttonText The button text to display on the upload button (defaults to
- * 'Browse...'). Note that if you supply a value for {@link #buttonCfg}, the buttonCfg.text
- * value will be used instead if available.
- */
- buttonText: 'Browse...',
- /**
- * @cfg {Boolean} buttonOnly True to display the file upload field as a button with no visible
- * text field (defaults to false). If true, all inherited TextField members will still be available.
- */
- buttonOnly: false,
- /**
- * @cfg {Number} buttonOffset The number of pixels of space reserved between the button and the text field
- * (defaults to 3). Note that this only applies if {@link #buttonOnly} = false.
- */
- buttonOffset: 3,
- /**
- * @cfg {Object} buttonCfg A standard {@link Ext.Button} config object.
- */
- // private
- readOnly: true,
- /**
- * @hide
- * @method autoSize
- */
- autoSize: Ext.emptyFn,
- // private
- initComponent: function(){
- Ext.ux.form.FileUploadField.superclass.initComponent.call(this);
- this.addEvents(
- /**
- * @event fileselected
- * Fires when the underlying file input field's value has changed from the user
- * selecting a new file from the system file selection dialog.
- * @param {Ext.ux.form.FileUploadField} this
- * @param {String} value The file value returned by the underlying file input field
- */
- 'fileselected'
- );
- },
- // private
- onRender : function(ct, position){
- Ext.ux.form.FileUploadField.superclass.onRender.call(this, ct, position);
- this.wrap = this.el.wrap({cls:'x-form-field-wrap x-form-file-wrap'});
- this.el.addClass('x-form-file-text');
- this.el.dom.removeAttribute('name');
- this.fileInput = this.wrap.createChild({
- id: this.getFileInputId(),
- name: this.name||this.getId(),
- cls: 'x-form-file',
- tag: 'input',
- type: 'file',
- size: 1
- });
- var btnCfg = Ext.applyIf(this.buttonCfg || {}, {
- text: this.buttonText
- });
- this.button = new Ext.Button(Ext.apply(btnCfg, {
- renderTo: this.wrap,
- cls: 'x-form-file-btn' + (btnCfg.iconCls ? ' x-btn-icon' : '')
- }));
- if(this.buttonOnly){
- this.el.hide();
- this.wrap.setWidth(this.button.getEl().getWidth());
- }
- this.fileInput.on('change', function(){
- var v = this.fileInput.dom.value;
- this.setValue(v);
- this.fireEvent('fileselected', this, v);
- }, this);
- },
- // private
- getFileInputId: function(){
- return this.id + '-file';
- },
- // private
- onResize : function(w, h){
- Ext.ux.form.FileUploadField.superclass.onResize.call(this, w, h);
- this.wrap.setWidth(w);
- if(!this.buttonOnly){
- var w = this.wrap.getWidth() - this.button.getEl().getWidth() - this.buttonOffset;
- this.el.setWidth(w);
- }
- },
- // private
- onDestroy: function(){
- Ext.ux.form.FileUploadField.superclass.onDestroy.call(this);
- Ext.destroy(this.fileInput, this.button, this.wrap);
- },
- // private
- preFocus : Ext.emptyFn,
- // private
- getResizeEl : function(){
- return this.wrap;
- },
- // private
- getPositionEl : function(){
- return this.wrap;
- },
- // private
- alignErrorIcon : function(){
- this.errorIcon.alignTo(this.wrap, 'tl-tr', [2, 0]);
- }
- });
- Ext.reg('fileuploadfield', Ext.ux.form.FileUploadField);
- // backwards compat
- Ext.form.FileUploadField = Ext.ux.form.FileUploadField;