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/*
        Copyright (c) 2004-2006, The Dojo Foundation
        All Rights Reserved.

        Licensed under the Academic Free License version 2.1 or above OR the
        modified BSD license. For more information on Dojo licensing, see:

                http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.io.XhrIframeProxy");
dojo.require("dojo.experimental");
dojo.experimental("dojo.io.XhrIframeProxy");
dojo.require("dojo.io.IframeIO");
dojo.require("dojo.dom");
dojo.require("dojo.uri.Uri");
dojo.io.XhrIframeProxy = {xipClientUrl:djConfig["xipClientUrl"] || dojo.uri.moduleUri("dojo.io", "xip_client.html"), _state:{}, _stateIdCounter:0, needFrameRecursion:function () {
        return (true == dojo.render.html.ie70);
}, send:function (facade) {
        var stateId = "XhrIframeProxy" + (this._stateIdCounter++);
        facade._stateId = stateId;
        var frameUrl = this.xipClientUrl + "#0:init:id=" + stateId + "&server=" + encodeURIComponent(facade._ifpServerUrl) + "&fr=false";
        if (this.needFrameRecursion()) {
                var fullClientUrl = window.location.href;
                if ((this.xipClientUrl + "").charAt(0) == "/") {
                        var endIndex = fullClientUrl.indexOf("://");
                        endIndex = fullClientUrl.indexOf("/", endIndex + 1);
                        fullClientUrl = fullClientUrl.substring(0, endIndex);
                } else {
                        fullClientUrl = fullClientUrl.substring(0, fullClientUrl.lastIndexOf("/") + 1);
                }
                fullClientUrl += this.xipClientUrl;
                var serverUrl = facade._ifpServerUrl + (facade._ifpServerUrl.indexOf("?") == -1 ? "?" : "&") + "dojo.fr=1";
                frameUrl = serverUrl + "#0:init:id=" + stateId + "&client=" + encodeURIComponent(fullClientUrl) + "&fr=" + this.needFrameRecursion();
        }
        this._state[stateId] = {facade:facade, stateId:stateId, clientFrame:dojo.io.createIFrame(stateId, "", frameUrl)};
        return stateId;
}, receive:function (stateId, urlEncodedData) {
        var response = {};
        var nvPairs = urlEncodedData.split("&");
        for (var i = 0; i < nvPairs.length; i++) {
                if (nvPairs[i]) {
                        var nameValue = nvPairs[i].split("=");
                        response[decodeURIComponent(nameValue[0])] = decodeURIComponent(nameValue[1]);
                }
        }
        var state = this._state[stateId];
        var facade = state.facade;
        facade._setResponseHeaders(response.responseHeaders);
        if (response.status == 0 || response.status) {
                facade.status = parseInt(response.status, 10);
        }
        if (response.statusText) {
                facade.statusText = response.statusText;
        }
        if (response.responseText) {
                facade.responseText = response.responseText;
                var contentType = facade.getResponseHeader("Content-Type");
                if (contentType && (contentType == "application/xml" || contentType == "text/xml")) {
                        facade.responseXML = dojo.dom.createDocumentFromText(response.responseText, contentType);
                }
        }
        facade.readyState = 4;
        this.destroyState(stateId);
}, clientFrameLoaded:function (stateId) {
        var state = this._state[stateId];
        var facade = state.facade;
        if (this.needFrameRecursion()) {
                var clientWindow = window.open("", state.stateId + "_clientEndPoint");
        } else {
                var clientWindow = state.clientFrame.contentWindow;
        }
        var reqHeaders = [];
        for (var param in facade._requestHeaders) {
                reqHeaders.push(param + ": " + facade._requestHeaders[param]);
        }
        var requestData = {uri:facade._uri};
        if (reqHeaders.length > 0) {
                requestData.requestHeaders = reqHeaders.join("\r\n");
        }
        if (facade._method) {
                requestData.method = facade._method;
        }
        if (facade._bodyData) {
                requestData.data = facade._bodyData;
        }
        clientWindow.send(dojo.io.argsFromMap(requestData, "utf8"));
}, destroyState:function (stateId) {
        var state = this._state[stateId];
        if (state) {
                delete this._state[stateId];
                var parentNode = state.clientFrame.parentNode;
                parentNode.removeChild(state.clientFrame);
                state.clientFrame = null;
                state = null;
        }
}, createFacade:function () {
        if (arguments && arguments[0] && arguments[0]["iframeProxyUrl"]) {
                return new dojo.io.XhrIframeFacade(arguments[0]["iframeProxyUrl"]);
        } else {
                return dojo.io.XhrIframeProxy.oldGetXmlhttpObject.apply(dojo.hostenv, arguments);
        }
}};
dojo.io.XhrIframeProxy.oldGetXmlhttpObject = dojo.hostenv.getXmlhttpObject;
dojo.hostenv.getXmlhttpObject = dojo.io.XhrIframeProxy.createFacade;
dojo.io.XhrIframeFacade = function (ifpServerUrl) {
        this._requestHeaders = {};
        this._allResponseHeaders = null;
        this._responseHeaders = {};
        this._method = null;
        this._uri = null;
        this._bodyData = null;
        this.responseText = null;
        this.responseXML = null;
        this.status = null;
        this.statusText = null;
        this.readyState = 0;
        this._ifpServerUrl = ifpServerUrl;
        this._stateId = null;
};
dojo.lang.extend(dojo.io.XhrIframeFacade, {open:function (method, uri) {
        this._method = method;
        this._uri = uri;
        this.readyState = 1;
}, setRequestHeader:function (header, value) {
        this._requestHeaders[header] = value;
}, send:function (stringData) {
        this._bodyData = stringData;
        this._stateId = dojo.io.XhrIframeProxy.send(this);
        this.readyState = 2;
}, abort:function () {
        dojo.io.XhrIframeProxy.destroyState(this._stateId);
}, getAllResponseHeaders:function () {
        return this._allResponseHeaders;
}, getResponseHeader:function (header) {
        return this._responseHeaders[header];
}, _setResponseHeaders:function (allHeaders) {
        if (allHeaders) {
                this._allResponseHeaders = allHeaders;
                allHeaders = allHeaders.replace(/\r/g, "");
                var nvPairs = allHeaders.split("\n");
                for (var i = 0; i < nvPairs.length; i++) {
                        if (nvPairs[i]) {
                                var nameValue = nvPairs[i].split(": ");
                                this._responseHeaders[nameValue[0]] = nameValue[1];
                        }
                }
        }
}});