dragdropzones.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:9k
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.onReady(function() {
- var patients = [{
- insuranceCode: '11111',
- name: 'Fred Bloggs',
- address: 'Main Street',
- telephone: '555 1234 123'
- }, {
- insuranceCode: '22222',
- name: 'Fred West',
- address: 'Cromwell Street',
- telephone: '666 666 666'
- }, {
- insuranceCode: '33333',
- name: 'Fred Mercury',
- address: 'Over The Rainbow',
- telephone: '555 321 0987'
- }, {
- insuranceCode: '44444',
- name: 'Fred Forsyth',
- address: 'Blimp Street',
- telephone: '555 111 2222'
- }, {
- insuranceCode: '55555',
- name: 'Fred Douglass',
- address: 'Talbot County, Maryland',
- telephone: 'N/A'
- }];
- var PatientRecord = Ext.data.Record.create([{
- name: 'name'
- }, {
- name: 'address'
- }, {
- name: 'telephone'
- }]);
- var patientStore = new Ext.data.Store({
- data: patients,
- reader: new Ext.data.JsonReader({
- id: 'insuranceCode'
- }, PatientRecord)
- });
- var hospitals = [{
- code: 'AAAAA',
- name: 'Saint Thomas',
- address: 'Westminster Bridge Road, SE1 7EH',
- telephone: '020 7188 7188'
- }, {
- code: 'BBBBB',
- name: 'Queen's Medical Centre',
- address: 'Derby Road, NG7 2UH',
- telephone: '0115 924 9924'
- }, {
- code: 'CCCCC',
- name: 'Saint Bartholomew',
- address: 'West Smithfield, EC1A 7BE',
- telephone: '020 7377 7000'
- }, {
- code: 'DDDDD',
- name: 'Royal London',
- address: 'Whitechapel, E1 1BB',
- telephone: '020 7377 7000'
- }];
- var HospitalRecord = Ext.data.Record.create([{
- name: 'name'
- }, {
- name: 'address'
- }, {
- name: 'telephone'
- }]);
- var hospitalStore = new Ext.data.Store({
- data: hospitals,
- reader: new Ext.data.JsonReader({
- id: 'code'
- }, HospitalRecord)
- });
- var patientView = new Ext.DataView({
- cls: 'patient-view',
- tpl: '<tpl for=".">' +
- '<div class="patient-source"><table><tbody>' +
- '<tr><td class="patient-label">Name</td><td class="patient-name">{name}</td></tr>' +
- '<tr><td class="patient-label">Address</td><td class="patient-name">{address}</td></tr>' +
- '<tr><td class="patient-label">Telephone</td><td class="patient-name">{telephone}</td></tr>' +
- '</tbody></table></div>' +
- '</tpl>',
- itemSelector: 'div.patient-source',
- store: patientStore,
- listeners: {
- render: initializePatientDragZone
- }
- });
- var helpWindow = new Ext.Window({
- title: 'Source code',
- width: 920,
- height: 500,
- closeAction: 'hide',
- bodyCfg: {tag: 'textarea', readonly: true},
- bodyStyle: {
- backgroundColor: 'white',
- margin: '0px',
- border: '0px none'
- },
- listeners: {
- render: function(w) {
- Ext.Ajax.request({
- url: 'dragdropzones.js',
- success: function(r) {
- w.body.dom.value = r.responseText;
- }
- });
- }
- }
- });
- var hospitalGrid = new Ext.grid.GridPanel({
- title: 'Hospitals',
- region: 'center',
- margins: '0 5 5 0',
- bbar: [{
- text: 'View Source',
- handler: function() {
- helpWindow.show();
- }
- }],
- columns: [{
- dataIndex: 'name',
- header: 'Name',
- width: 200
- }, {
- dataIndex: 'address',
- header: 'Address',
- width: 300
- }, {
- dataIndex: 'telephone',
- header: 'Telephone',
- width: 100
- }],
- viewConfig: {
- tpl: new Ext.XTemplate('<div class="hospital-target"></div>'),
- enableRowBody: true,
- getRowClass: function(rec, idx, p, store) {
- p.body = this.tpl.apply(rec.data);
- }
- },
- store: hospitalStore,
- listeners: {
- render: initializeHospitalDropZone
- }
- });
- new Ext.Viewport({
- layout: 'border',
- items: [{
- cls: 'app-header',
- region: 'north',
- height: 100,
- html: '<h1>Patient Hospital Assignment</h1>',
- margins: '5 5 5 5'
- }, {
- title: 'Patients',
- region: 'west',
- width: 300,
- margins: '0 5 5 5',
- items: patientView
- }, hospitalGrid ]
- });
- });
- /*
- * Here is where we "activate" the DataView.
- * We have decided that each node with the class "patient-source" encapsulates a single draggable
- * object.
- *
- * So we inject code into the DragZone which, when passed a mousedown event, interrogates
- * the event to see if it was within an element with the class "patient-source". If so, we
- * return non-null drag data.
- *
- * Returning non-null drag data indicates that the mousedown event has begun a dragging process.
- * The data must contain a property called "ddel" which is a DOM element which provides an image
- * of the data being dragged. The actual node clicked on is not dragged, a proxy element is dragged.
- * We can insert any other data into the data object, and this will be used by a cooperating DropZone
- * to perform the drop operation.
- */
- function initializePatientDragZone(v) {
- v.dragZone = new Ext.dd.DragZone(v.getEl(), {
- // On receipt of a mousedown event, see if it is within a draggable element.
- // Return a drag data object if so. The data object can contain arbitrary application
- // data, but it should also contain a DOM element in the ddel property to provide
- // a proxy to drag.
- getDragData: function(e) {
- var sourceEl = e.getTarget(v.itemSelector, 10);
- if (sourceEl) {
- d = sourceEl.cloneNode(true);
- d.id = Ext.id();
- return v.dragData = {
- sourceEl: sourceEl,
- repairXY: Ext.fly(sourceEl).getXY(),
- ddel: d,
- patientData: v.getRecord(sourceEl).data
- }
- }
- },
- // Provide coordinates for the proxy to slide back to on failed drag.
- // This is the original XY coordinates of the draggable element.
- getRepairXY: function() {
- return this.dragData.repairXY;
- }
- });
- }
- /*
- * Here is where we "activate" the GridPanel.
- * We have decided that the element with class "hospital-target" is the element which can receieve
- * drop gestures. So we inject a method "getTargetFromEvent" into the DropZone. This is constantly called
- * while the mouse is moving over the DropZone, and it returns the target DOM element if it detects that
- * the mouse if over an element which can receieve drop gestures.
- *
- * Once the DropZone has been informed by getTargetFromEvent that it is over a target, it will then
- * call several "onNodeXXXX" methods at various points. These include:
- *
- * onNodeEnter
- * onNodeOut
- * onNodeOver
- * onNodeDrop
- *
- * We provide implementations of each of these to provide behaviour for these events.
- */
- function initializeHospitalDropZone(g) {
- g.dropZone = new Ext.dd.DropZone(g.getView().scroller, {
- // If the mouse is over a target node, return that node. This is
- // provided as the "target" parameter in all "onNodeXXXX" node event handling functions
- getTargetFromEvent: function(e) {
- return e.getTarget('.hospital-target');
- },
- // On entry into a target node, highlight that node.
- onNodeEnter : function(target, dd, e, data){
- Ext.fly(target).addClass('hospital-target-hover');
- },
- // On exit from a target node, unhighlight that node.
- onNodeOut : function(target, dd, e, data){
- Ext.fly(target).removeClass('hospital-target-hover');
- },
- // While over a target node, return the default drop allowed class which
- // places a "tick" icon into the drag proxy.
- onNodeOver : function(target, dd, e, data){
- return Ext.dd.DropZone.prototype.dropAllowed;
- },
- // On node drop, we can interrogate the target node to find the underlying
- // application object that is the real target of the dragged data.
- // In this case, it is a Record in the GridPanel's Store.
- // We can use the data set up by the DragZone's getDragData method to read
- // any data we decided to attach.
- onNodeDrop : function(target, dd, e, data){
- var rowIndex = g.getView().findRowIndex(target);
- var h = g.getStore().getAt(rowIndex);
- Ext.Msg.alert('Drop gesture', 'Dropped patient ' + data.patientData.name +
- ' on hospital ' + h.data.name);
- return true;
- }
- });
- }