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/* |
Copyright (c) 2004-2006, The Dojo Foundation |
All Rights Reserved. |
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Licensed under the Academic Free License version 2.1 or above OR the |
modified BSD license. For more information on Dojo licensing, see: |
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http://dojotoolkit.org/community/licensing.shtml |
*/ |
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dojo.provide("dojo.io.IframeIO"); |
dojo.require("dojo.io.BrowserIO"); |
dojo.require("dojo.uri.*"); |
dojo.io.createIFrame = function (fname, onloadstr, uri) { |
if (window[fname]) { |
return window[fname]; |
} |
if (window.frames[fname]) { |
return window.frames[fname]; |
} |
var r = dojo.render.html; |
var cframe = null; |
var turi = uri; |
if (!turi) { |
if (djConfig["useXDomain"] && !djConfig["dojoIframeHistoryUrl"]) { |
dojo.debug("dojo.io.createIFrame: When using cross-domain Dojo builds," + " please save iframe_history.html to your domain and set djConfig.dojoIframeHistoryUrl" + " to the path on your domain to iframe_history.html"); |
} |
turi = (djConfig["dojoIframeHistoryUrl"] || dojo.uri.moduleUri("dojo", "../iframe_history.html")) + "#noInit=true"; |
} |
var ifrstr = ((r.ie) && (dojo.render.os.win)) ? "<iframe name=\"" + fname + "\" src=\"" + turi + "\" onload=\"" + onloadstr + "\">" : "iframe"; |
cframe = document.createElement(ifrstr); |
with (cframe) { |
name = fname; |
setAttribute("name", fname); |
id = fname; |
} |
dojo.body().appendChild(cframe); |
window[fname] = cframe; |
with (cframe.style) { |
if (!r.safari) { |
position = "absolute"; |
} |
left = top = "0px"; |
height = width = "1px"; |
visibility = "hidden"; |
} |
if (!r.ie) { |
dojo.io.setIFrameSrc(cframe, turi, true); |
cframe.onload = new Function(onloadstr); |
} |
return cframe; |
}; |
dojo.io.IframeTransport = new function () { |
var _this = this; |
this.currentRequest = null; |
this.requestQueue = []; |
this.iframeName = "dojoIoIframe"; |
this.fireNextRequest = function () { |
try { |
if ((this.currentRequest) || (this.requestQueue.length == 0)) { |
return; |
} |
var cr = this.currentRequest = this.requestQueue.shift(); |
cr._contentToClean = []; |
var fn = cr["formNode"]; |
var content = cr["content"] || {}; |
if (cr.sendTransport) { |
content["dojo.transport"] = "iframe"; |
} |
if (fn) { |
if (content) { |
for (var x in content) { |
if (!fn[x]) { |
var tn; |
if (dojo.render.html.ie) { |
tn = document.createElement("<input type='hidden' name='" + x + "' value='" + content[x] + "'>"); |
fn.appendChild(tn); |
} else { |
tn = document.createElement("input"); |
fn.appendChild(tn); |
tn.type = "hidden"; |
tn.name = x; |
tn.value = content[x]; |
} |
cr._contentToClean.push(x); |
} else { |
fn[x].value = content[x]; |
} |
} |
} |
if (cr["url"]) { |
cr._originalAction = fn.getAttribute("action"); |
fn.setAttribute("action", cr.url); |
} |
if (!fn.getAttribute("method")) { |
fn.setAttribute("method", (cr["method"]) ? cr["method"] : "post"); |
} |
cr._originalTarget = fn.getAttribute("target"); |
fn.setAttribute("target", this.iframeName); |
fn.target = this.iframeName; |
fn.submit(); |
} else { |
var query = dojo.io.argsFromMap(this.currentRequest.content); |
var tmpUrl = cr.url + (cr.url.indexOf("?") > -1 ? "&" : "?") + query; |
dojo.io.setIFrameSrc(this.iframe, tmpUrl, true); |
} |
} |
catch (e) { |
this.iframeOnload(e); |
} |
}; |
this.canHandle = function (kwArgs) { |
return ((dojo.lang.inArray(["text/plain", "text/html", "text/javascript", "text/json", "application/json"], kwArgs["mimetype"])) && (dojo.lang.inArray(["post", "get"], kwArgs["method"].toLowerCase())) && (!((kwArgs["sync"]) && (kwArgs["sync"] == true)))); |
}; |
this.bind = function (kwArgs) { |
if (!this["iframe"]) { |
this.setUpIframe(); |
} |
this.requestQueue.push(kwArgs); |
this.fireNextRequest(); |
return; |
}; |
this.setUpIframe = function () { |
this.iframe = dojo.io.createIFrame(this.iframeName, "dojo.io.IframeTransport.iframeOnload();"); |
}; |
this.iframeOnload = function (errorObject) { |
if (!_this.currentRequest) { |
_this.fireNextRequest(); |
return; |
} |
var req = _this.currentRequest; |
if (req.formNode) { |
var toClean = req._contentToClean; |
for (var i = 0; i < toClean.length; i++) { |
var key = toClean[i]; |
if (dojo.render.html.safari) { |
var fNode = req.formNode; |
for (var j = 0; j < fNode.childNodes.length; j++) { |
var chNode = fNode.childNodes[j]; |
if (chNode.name == key) { |
var pNode = chNode.parentNode; |
pNode.removeChild(chNode); |
break; |
} |
} |
} else { |
var input = req.formNode[key]; |
req.formNode.removeChild(input); |
req.formNode[key] = null; |
} |
} |
if (req["_originalAction"]) { |
req.formNode.setAttribute("action", req._originalAction); |
} |
if (req["_originalTarget"]) { |
req.formNode.setAttribute("target", req._originalTarget); |
req.formNode.target = req._originalTarget; |
} |
} |
var contentDoc = function (iframe_el) { |
var doc = iframe_el.contentDocument || ((iframe_el.contentWindow) && (iframe_el.contentWindow.document)) || ((iframe_el.name) && (document.frames[iframe_el.name]) && (document.frames[iframe_el.name].document)) || null; |
return doc; |
}; |
var value; |
var success = false; |
if (errorObject) { |
this._callError(req, "IframeTransport Request Error: " + errorObject); |
} else { |
var ifd = contentDoc(_this.iframe); |
try { |
var cmt = req.mimetype; |
if ((cmt == "text/javascript") || (cmt == "text/json") || (cmt == "application/json")) { |
var js = ifd.getElementsByTagName("textarea")[0].value; |
if (cmt == "text/json" || cmt == "application/json") { |
js = "(" + js + ")"; |
} |
value = dj_eval(js); |
} else { |
if (cmt == "text/html") { |
value = ifd; |
} else { |
value = ifd.getElementsByTagName("textarea")[0].value; |
} |
} |
success = true; |
} |
catch (e) { |
this._callError(req, "IframeTransport Error: " + e); |
} |
} |
try { |
if (success && dojo.lang.isFunction(req["load"])) { |
req.load("load", value, req); |
} |
} |
catch (e) { |
throw e; |
} |
finally { |
_this.currentRequest = null; |
_this.fireNextRequest(); |
} |
}; |
this._callError = function (req, message) { |
var errObj = new dojo.io.Error(message); |
if (dojo.lang.isFunction(req["error"])) { |
req.error("error", errObj, req); |
} |
}; |
dojo.io.transports.addTransport("IframeTransport"); |
}; |
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