430 lines
11 KiB
JavaScript
430 lines
11 KiB
JavaScript
define("dojo/request/iframe", [
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'module',
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'require',
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'./watch',
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'./util',
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'./handlers',
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'../_base/lang',
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'../io-query',
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'../query',
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'../has',
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'../dom',
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'../dom-construct',
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'../_base/window'/*=====,
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'../request',
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'../_base/declare' =====*/
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], function(module, require, watch, util, handlers, lang, ioQuery, query, has, dom, domConstruct, win/*=====, request, declare =====*/){
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var mid = module.id.replace(/[\/\.\-]/g, '_'),
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onload = mid + '_onload';
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if(!win.global[onload]){
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win.global[onload] = function(){
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var dfd = iframe._currentDfd;
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if(!dfd){
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iframe._fireNextRequest();
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return;
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}
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var response = dfd.response,
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options = response.options,
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formNode = dom.byId(options.form) || dfd._tmpForm;
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if(formNode){
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// remove all the hidden content inputs
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var toClean = dfd._contentToClean;
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for(var i=0; i<toClean.length; i++){
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var key = toClean[i];
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//Need to cycle over all nodes since we may have added
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//an array value which means that more than one node could
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//have the same .name value.
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for(var j=0; j<formNode.childNodes.length; j++){
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var childNode = formNode.childNodes[j];
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if(childNode.name === key){
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domConstruct.destroy(childNode);
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break;
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}
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}
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}
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// restore original action + target
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dfd._originalAction && formNode.setAttribute('action', dfd._originalAction);
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if(dfd._originalMethod){
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formNode.setAttribute('method', dfd._originalMethod);
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formNode.method = dfd._originalMethod;
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}
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if(dfd._originalTarget){
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formNode.setAttribute('target', dfd._originalTarget);
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formNode.target = dfd._originalTarget;
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}
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}
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if(dfd._tmpForm){
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domConstruct.destroy(dfd._tmpForm);
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delete dfd._tmpForm;
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}
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dfd._finished = true;
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};
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}
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function create(name, onloadstr, uri){
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if(win.global[name]){
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return win.global[name];
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}
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if(win.global.frames[name]){
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return win.global.frames[name];
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}
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if(!uri){
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if(has('config-useXDomain') && !has('config-dojoBlankHtmlUrl')){
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console.warn('dojo/request/iframe: When using cross-domain Dojo builds,' +
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' please save dojo/resources/blank.html to your domain and set dojoConfig.dojoBlankHtmlUrl' +
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' to the path on your domain to blank.html');
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}
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uri = (has('config-dojoBlankHtmlUrl')||require.toUrl('dojo/resources/blank.html'));
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}
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var frame = domConstruct.place(
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'<iframe id="'+name+'" name="'+name+'" src="'+uri+'" onload="'+onloadstr+
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'" style="position: absolute; left: 1px; top: 1px; height: 1px; width: 1px; visibility: hidden">',
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win.body());
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win.global[name] = frame;
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return frame;
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}
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function setSrc(_iframe, src, replace){
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var frame = win.global.frames[_iframe.name];
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if(frame.contentWindow){
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// We have an iframe node instead of the window
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frame = frame.contentWindow;
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}
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try{
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if(!replace){
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frame.location = src;
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}else{
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frame.location.replace(src);
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}
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}catch(e){
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console.log('dojo/request/iframe.setSrc: ', e);
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}
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}
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function doc(iframeNode){
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if(iframeNode.contentDocument){
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return iframeNode.contentDocument;
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}
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var name = iframeNode.name;
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if(name){
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var iframes = win.doc.getElementsByTagName('iframe');
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if(iframeNode.document && iframes[name].contentWindow && iframes[name].contentWindow.document){
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return iframes[name].contentWindow.document;
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}else if(win.doc.frames[name] && win.doc.frames[name].document){
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return win.doc.frames[name].document;
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}
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}
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return null;
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}
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function createForm(){
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return domConstruct.create('form', {
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name: mid + '_form',
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style: {
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position: 'absolute',
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top: '-1000px',
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left: '-1000px'
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}
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}, win.body());
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}
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function fireNextRequest(){
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// summary:
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// Internal method used to fire the next request in the queue.
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var dfd;
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try{
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if(iframe._currentDfd || !iframe._dfdQueue.length){
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return;
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}
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do{
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dfd = iframe._currentDfd = iframe._dfdQueue.shift();
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}while(dfd && (dfd.canceled || (dfd.isCanceled && dfd.isCanceled())) && iframe._dfdQueue.length);
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if(!dfd || dfd.canceled || (dfd.isCanceled && dfd.isCanceled())){
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iframe._currentDfd = null;
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return;
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}
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var response = dfd.response,
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options = response.options,
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c2c = dfd._contentToClean = [],
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formNode = dom.byId(options.form),
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notify = util.notify,
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data = options.data || null,
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queryStr;
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if(!dfd._legacy && options.method === 'POST' && !formNode){
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formNode = dfd._tmpForm = createForm();
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}else if(options.method === 'GET' && formNode && response.url.indexOf('?') > -1){
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queryStr = response.url.slice(response.url.indexOf('?') + 1);
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data = lang.mixin(ioQuery.queryToObject(queryStr), data);
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}
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if(formNode){
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if(!dfd._legacy){
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var parentNode = formNode;
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do{
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parentNode = parentNode.parentNode;
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}while(parentNode !== win.doc.documentElement);
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// Append the form node or some browsers won't work
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if(!parentNode){
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formNode.style.position = 'absolute';
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formNode.style.left = '-1000px';
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formNode.style.top = '-1000px';
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win.body().appendChild(formNode);
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}
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if(!formNode.name){
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formNode.name = mid + '_form';
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}
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}
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// if we have things in data, we need to add them to the form
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// before submission
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if(data){
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var createInput = function(name, value){
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domConstruct.create('input', {
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type: 'hidden',
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name: name,
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value: value
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}, formNode);
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c2c.push(name);
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};
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for(var x in data){
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var val = data[x];
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if(lang.isArray(val) && val.length > 1){
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for(var i=0; i<val.length; i++){
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createInput(x, val[i]);
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}
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}else{
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if(!formNode[x]){
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createInput(x, val);
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}else{
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formNode[x].value = val;
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}
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}
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}
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}
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//IE requires going through getAttributeNode instead of just getAttribute in some form cases,
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//so use it for all. See #2844
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var actionNode = formNode.getAttributeNode('action'),
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methodNode = formNode.getAttributeNode('method'),
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targetNode = formNode.getAttributeNode('target');
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if(response.url){
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dfd._originalAction = actionNode ? actionNode.value : null;
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if(actionNode){
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actionNode.value = response.url;
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}else{
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formNode.setAttribute('action', response.url);
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}
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}
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if(!dfd._legacy){
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dfd._originalMethod = methodNode ? methodNode.value : null;
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if(methodNode){
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methodNode.value = options.method;
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}else{
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formNode.setAttribute('method', options.method);
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}
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}else{
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if(!methodNode || !methodNode.value){
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if(mthdNode){
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mthdNode.value = options.method;
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}else{
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fn.setAttribute("method", options.method);
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}
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}
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}
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dfd._originalTarget = targetNode ? targetNode.value : null;
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if(targetNode){
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targetNode.value = iframe._iframeName;
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}else{
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formNode.setAttribute('target', iframe._iframeName);
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}
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formNode.target = iframe._iframeName;
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notify && notify.emit('send', response, dfd.promise.cancel);
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iframe._notifyStart(response);
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formNode.submit();
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}else{
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// otherwise we post a GET string by changing URL location for the
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// iframe
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var extra = '';
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if(response.options.data){
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extra = response.options.data;
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if(typeof extra !== 'string'){
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extra = ioQuery.objectToQuery(extra);
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}
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}
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var tmpUrl = response.url + (response.url.indexOf('?') > -1 ? '&' : '?') + extra;
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notify && notify.emit('send', response, dfd.promise.cancel);
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iframe._notifyStart(response);
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iframe.setSrc(iframe._frame, tmpUrl, true);
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}
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}catch(e){
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dfd.reject(e);
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}
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}
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// dojo/request/watch handlers
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function isValid(response){
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return !this.isFulfilled();
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}
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function isReady(response){
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return !!this._finished;
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}
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function handleResponse(response, error){
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if(!error){
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try{
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var options = response.options,
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doc = iframe.doc(iframe._frame),
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handleAs = options.handleAs;
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if(handleAs !== 'html'){
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if(handleAs === 'xml'){
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// IE6-8 have to parse the XML manually. See http://bugs.dojotoolkit.org/ticket/6334
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if(doc.documentElement.tagName.toLowerCase() === 'html'){
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query('a', doc.documentElement).orphan();
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var xmlText = doc.documentElement.innerText;
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xmlText = xmlText.replace(/>\s+</g, '><');
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response.text = lang.trim(xmlText);
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}else{
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response.data = doc;
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}
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}else{
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// 'json' and 'javascript' and 'text'
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response.text = doc.getElementsByTagName('textarea')[0].value; // text
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}
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handlers(response);
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}else{
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response.data = doc;
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}
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}catch(e){
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error = e;
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}
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}
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if(error){
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this.reject(error);
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}else if(this._finished){
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this.resolve(response);
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}else{
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this.reject(new Error('Invalid dojo/request/iframe request state'));
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}
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}
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function last(response){
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this._callNext();
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}
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var defaultOptions = {
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method: 'POST'
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};
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function iframe(url, options, returnDeferred){
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var response = util.parseArgs(url, util.deepCreate(defaultOptions, options), true);
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url = response.url;
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options = response.options;
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if(options.method !== 'GET' && options.method !== 'POST'){
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throw new Error(options.method + ' not supported by dojo/request/iframe');
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}
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if(!iframe._frame){
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iframe._frame = iframe.create(iframe._iframeName, onload + '();');
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}
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var dfd = util.deferred(response, null, isValid, isReady, handleResponse, last);
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dfd._callNext = function(){
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if(!this._calledNext){
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this._calledNext = true;
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iframe._currentDfd = null;
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iframe._fireNextRequest();
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}
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};
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dfd._legacy = returnDeferred;
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iframe._dfdQueue.push(dfd);
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iframe._fireNextRequest();
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watch(dfd);
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return returnDeferred ? dfd : dfd.promise;
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}
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/*=====
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iframe = function(url, options){
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// summary:
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// Sends a request using an iframe element with the given URL and options.
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// url: String
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// URL to request
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// options: dojo/request/iframe.__Options?
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// Options for the request.
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// returns: dojo/request.__Promise
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};
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iframe.__BaseOptions = declare(request.__BaseOptions, {
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// form: DOMNode?
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// A form node to use to submit data to the server.
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// data: String|Object?
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// Data to transfer. When making a GET request, this will
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// be converted to key=value parameters and appended to the
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// URL.
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});
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iframe.__MethodOptions = declare(null, {
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// method: String?
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// The HTTP method to use to make the request. Must be
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// uppercase. Only `"GET"` and `"POST"` are accepted.
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// Default is `"POST"`.
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});
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iframe.__Options = declare([iframe.__BaseOptions, iframe.__MethodOptions]);
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iframe.get = function(url, options){
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// summary:
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// Send an HTTP GET request using an iframe element with the given URL and options.
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// url: String
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// URL to request
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// options: dojo/request/iframe.__BaseOptions?
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// Options for the request.
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// returns: dojo/request.__Promise
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};
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iframe.post = function(url, options){
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// summary:
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// Send an HTTP POST request using an iframe element with the given URL and options.
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// url: String
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// URL to request
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// options: dojo/request/iframe.__BaseOptions?
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// Options for the request.
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// returns: dojo/request.__Promise
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};
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=====*/
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iframe.create = create;
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iframe.doc = doc;
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iframe.setSrc = setSrc;
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// TODO: Make these truly private in 2.0
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iframe._iframeName = mid + '_IoIframe';
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iframe._notifyStart = function(){};
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iframe._dfdQueue = [];
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iframe._currentDfd = null;
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iframe._fireNextRequest = fireNextRequest;
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util.addCommonMethods(iframe, ['GET', 'POST']);
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return iframe;
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});
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