--- /dev/null
+/* ************************************************************************
+
+ qooxdoo - the new era of web development
+
+ http://qooxdoo.org
+
+ Copyright:
+ 2007 Visionet GmbH, http://www.visionet.de
+
+ License:
+ LGPL: http://www.gnu.org/licenses/lgpl.html
+ EPL: http://www.eclipse.org/org/documents/epl-v10.php
+ See the LICENSE file in the project's top-level directory for details.
+
+ Authors:
+ * Dietrich Streifert (level420)
+
+************************************************************************ */
+
+/* ************************************************************************
+
+#module(uploadwidget_ui_io)
+#require(qx.xml.Document)
+
+************************************************************************ */
+
+/**
+ * An upload widget implementation capable of holding multiple upload buttons
+ * and upload fields.
+ *
+ * Each upload form creates an iframe which is used as a target for form submit.
+ *
+ *
+ */
+qx.Class.define("uploadwidget.UploadForm",
+{
+ extend : qx.ui.layout.CanvasLayout,
+
+ /*
+ *****************************************************************************
+ CONSTRUCTOR
+ *****************************************************************************
+ */
+
+ /**
+ * @param name {String} form name ({@link #name}).
+ * @param url {String} url for form submission ({@link #url}).
+ * @param encoding {String} encoding for from submission. This is an instantiation only parameter and defaults to multipart/form-data
+ */
+ construct : function(name, url, encoding)
+ {
+ this.base(arguments);
+
+ // Apply initial values
+ if(name) {
+ this.setName(name);
+ }
+
+ if(url) {
+ this.setUrl(url);
+ }
+
+ this.setHtmlProperty("encoding", encoding || "multipart/form-data");
+
+ // Initialize Properties
+ this.initHeight();
+ this.initWidth();
+ this.initSelectable();
+ this.initMethod();
+
+
+ // Initialize Variables
+ this._parameters = {};
+ this._hidden = {};
+
+ // create a hidden iframe which is used as form submission target
+ this._createIFrameTarget();
+ },
+
+
+ /*
+ *****************************************************************************
+ EVENTS
+ *****************************************************************************
+ */
+
+ events:
+ {
+ "sending" : "qx.event.type.Event",
+ "completed" : "qx.event.type.Event"
+ },
+
+
+ /*
+ *****************************************************************************
+ PROPERTIES
+ *****************************************************************************
+ */
+
+ properties :
+ {
+ /**
+ * The name which is assigned to the form
+ */
+ name :
+ {
+ check : "String",
+ init : "",
+ apply : "_applyName"
+ },
+
+ /**
+ * The url which is used for form submission.
+ */
+ url :
+ {
+ check : "String",
+ init : "",
+ apply : "_applyUrl"
+ },
+
+ /**
+ * The target which is used for form submission.
+ */
+ target :
+ {
+ check : "String",
+ init : "",
+ apply : "_applyTarget"
+ },
+
+ /**
+ * Determines what type of request to issue (GET or POST).
+ */
+ method :
+ {
+ check : [ qx.net.Http.METHOD_GET, qx.net.Http.METHOD_POST ],
+ init : qx.net.Http.METHOD_POST,
+ apply : "_applyMethod"
+ },
+
+ /**
+ * refine the initial value of height to auto
+ */
+ height:
+ {
+ refine : true,
+ init : "auto"
+ },
+
+ /**
+ * refine the initial value of width to auto
+ */
+ width:
+ {
+ refine : true,
+ init : "auto"
+ },
+
+ /**
+ * refine the initial value of selectable to true
+ */
+ selectable :
+ {
+ refine : true,
+ init : true
+ }
+ },
+
+
+ /*
+ *****************************************************************************
+ MEMBERS
+ *****************************************************************************
+ */
+
+ members :
+ {
+
+
+ /*
+ ---------------------------------------------------------------------------
+ APPLY ROUTINES
+ ---------------------------------------------------------------------------
+ */
+
+ _applyName : function(value, old) {
+ this.setHtmlProperty("name", value);
+ },
+
+ _applyUrl : function(value, old) {
+ this.setHtmlProperty("action", value);
+ },
+
+ _applyTarget : function(value, old) {
+ this.setHtmlProperty("target", value);
+ },
+
+ _applyMethod : function(value, old) {
+ this.setHtmlProperty("method", value);
+ },
+
+
+ /*
+ ---------------------------------------------------------------------------
+ UTILITIES
+ ---------------------------------------------------------------------------
+ */
+
+ /**
+ * Create a hidden iframe which is used as target for the form submission.
+ * Don't need a src attribute, if it was set to javascript:void we get an insecure
+ * objects error in IE.
+ *
+ * @type member
+ * @return {void}
+ */
+ _createIFrameTarget : function()
+ {
+ var frameName = "frame_" + (new Date).valueOf();
+
+ if (qx.core.Variant.isSet("qx.client", "mshtml"))
+ {
+ this._iframeNode = document.createElement('<iframe name="' + frameName + '"></iframe>');
+ } else {
+ this._iframeNode = document.createElement("iframe");
+ }
+
+ this._iframeNode.id = this._iframeNode.name = frameName;
+ this._iframeNode.style.display = "none";
+ this.setTarget(frameName);
+
+ document.body.appendChild(this._iframeNode);
+
+ this._iframeNode.onload = qx.lang.Function.bind(this._onLoad, this);
+ this._iframeNode.onreadystatechange = qx.lang.Function.bind(this._onReadyStateChange, this);
+ },
+
+
+ /**
+ * Create an empty form widget. IE is not able to change the enctype
+ * after element creation, so the enctype is set by using a skeleton
+ * form tag as parameter for createElement.
+ *
+ * @type member
+ * @return {void}
+ */
+ _createElementImpl : function() {
+ var tagName;
+ if (qx.core.Variant.isSet("qx.client", "mshtml")) {
+ tagName ='<form enctype="' + this.getHtmlProperty("encoding") + '"></form>';
+ } else {
+ tagName = 'form';
+ }
+
+ this.setElement(this.getTopLevelWidget().getDocumentElement().createElement(tagName));
+ },
+
+
+ /**
+ * Add parameters as hidden fields to the form.
+ *
+ * @type member
+ * @return {object}
+ */
+ _addFormParameters : function() {
+ var form = this.getElement();
+ var parameters = this.getParameters();
+
+ for (var id in parameters) {
+ form.appendChild(this._hidden[id]);
+ }
+ },
+
+
+ /**
+ * Create an input element of type hidden with the
+ * name ({@link #name}) and value ({@link #value})
+ *
+ * @type member
+ * @param name {String} name attribute of the created element ({@link #name}).
+ * @param value {String} value attribute of the created element ({@link #value}).
+ * @return {void}
+ */
+ _createHiddenFormField : function(name,value) {
+ var hvalue = document.createElement("input");
+ hvalue.type = "hidden";
+ hvalue.name = name;
+ hvalue.value = value;
+
+ return hvalue;
+ },
+
+
+ /**
+ * Set a request parameter which is stored as an input type=hidden.
+ *
+ * @param id String identifier of the parameter to add.
+ * @param value String Value of parameter.
+ * @return {void}
+ */
+ setParameter : function(id, value) {
+ this._parameters[id] = value;
+ if(this._hidden[id] && this._hidden[id].name) {
+ this._hidden[id].value = value;
+ }
+ else {
+ this._hidden[id] = this._createHiddenFormField(id, value);
+ }
+ },
+
+
+ /**
+ * Remove a parameter from the request.
+ *
+ * @param id String identifier of the parameter to remove.
+ * @return {void}
+ */
+ removeParameter : function(id) {
+ delete this._parameters[id];
+ if(this._hidden[id] && this._hidden[id].parentNode) {
+ this._hidden[id].parentNode.removeChild(this._hidden[id]);
+ }
+ delete this._hidden[id];
+ },
+
+
+ /**
+ * Get a parameter in the request.
+ *
+ * @param id String identifier of the parameter to get.
+ * @return {String}
+ */
+ getParameter : function(id) {
+ return this._parameters[id] || null;
+ },
+
+
+ /**
+ * Returns the array containg all parameters for the request.
+ *
+ * @return {Array}
+ */
+ getParameters : function() {
+ return this._parameters;
+ },
+
+
+ /**
+ * Send the form via the submit method. Target defaults to the
+ * self created iframe.
+ *
+ * @return {void}
+ */
+ send : function() {
+ var form = this.getElement();
+ if(form) {
+ this._addFormParameters();
+
+ form.submit();
+
+ this._isSent = true;
+ this.createDispatchEvent("sending");
+ }
+ else {
+ throw new Error("Form element not created! Unable to call form submit!");
+ }
+ },
+
+
+
+ /*
+ ---------------------------------------------------------------------------
+ FRAME UTILITIES
+ ---------------------------------------------------------------------------
+ */
+
+ /**
+ * Get the DOM window object of the target iframe.
+ *
+ * @type member
+ * @return {DOMWindow} The DOM window object of the iframe.
+ */
+ getIframeWindow : function() {
+ return qx.html.Iframe.getWindow(this._iframeNode);
+ },
+
+
+ /**
+ * Get the DOM document object of the target iframe.
+ *
+ * @type member
+ * @return {DOMDocument} The DOM document object of the iframe.
+ */
+ getIframeDocument : function() {
+ return qx.html.Iframe.getDocument(this._iframeNode);
+ },
+
+
+ /**
+ * Get the HTML body element of the target iframe.
+ *
+ * @type member
+ * @return {Element} The DOM node of the <code>body</code> element of the iframe.
+ */
+ getIframeBody : function() {
+ return qx.html.Iframe.getBody(this._iframeNode);
+ },
+
+
+ /**
+ * Get the target iframe Element.
+ *
+ * @type member
+ * @return {Element} The DOM element of the iframe.
+ */
+ getIframeNode : function() {
+ return this._iframeNode;
+ },
+
+
+
+ /*
+ ---------------------------------------------------------------------------
+ RESPONSE DATA SUPPORT
+ ---------------------------------------------------------------------------
+ */
+
+ /**
+ * Get the text content of the target iframe.
+ *
+ * @type member
+ * @return {String} The text response of the submit.
+ */
+ getIframeTextContent : function() {
+ var vBody = this.getIframeBody();
+
+ if (!vBody) {
+ return null;
+ }
+
+ // Mshtml returns the content inside a PRE
+ // element if we use plain text
+ if (vBody.firstChild && (vBody.firstChild.tagName == "PRE" || vBody.firstChild.tagName == "pre"))
+ {
+ return vBody.firstChild.innerHTML;
+ }
+ else
+ {
+ return vBody.innerHTML;
+ }
+ },
+
+
+ /**
+ * Get the HTML content of the target iframe.
+ *
+ * @type member
+ * @return {String} The html response of the submit.
+ */
+ getIframeHtmlContent : function() {
+ var vBody = this.getIframeBody();
+ return vBody ? vBody.innerHTML : null;
+ },
+
+
+ /**
+ * Get the XML content of the target iframe.
+ *
+ * This is a hack for now because I didn't find a way
+ * to send XML via the iframe response.
+ *
+ * In the resulting text all occurences of the <
+ * and > entities are replaces by < and > and
+ * the Text is then parsed into a XML-Document instance.
+ *
+ * @type member
+ * @return {Document} The XML response of the submit.
+ */
+ getIframeXmlContent : function() {
+ var responsetext = this.getIframeTextContent();
+
+ if(!responsetext || responsetext.length == 0) {
+ return null;
+ }
+
+ var xmlContent = null;
+ var newText = responsetext.replace(/</g,"<");
+ newText = newText.replace(/>/g, ">");
+
+ try {
+ xmlContent = qx.xml.Document.fromString(newText);
+ }
+ catch(ex) {};
+
+ return xmlContent;
+ },
+
+
+
+ /*
+ ---------------------------------------------------------------------------
+ EVENT HANDLER
+ ---------------------------------------------------------------------------
+ */
+
+ /**
+ * Catch the onreadystatechange event of the target iframe.
+ *
+ * @type member
+ * @param e {Event}
+ * @return {void}
+ */
+ _onReadyStateChange : function(e) {
+ if (this.getIframeNode().readyState == "complete" && this._isSent) {
+ this.createDispatchEvent("completed");
+ delete this._isSent;
+ }
+ },
+
+
+ /**
+ * Catch the onload event of the target iframe
+ *
+ * @type member
+ * @param e {Event}
+ * @return {void}
+ */
+ _onLoad : function(e) {
+ if(this._isSent) {
+ this.createDispatchEvent("completed");
+ delete this._isSent;
+ }
+ }
+ },
+
+ /*
+ *****************************************************************************
+ DESTRUCTOR
+ *****************************************************************************
+ */
+
+ destruct : function()
+ {
+ if (this._iframeNode)
+ {
+ try
+ {
+ document.body.removeChild(this._iframeNode);
+ this._iframeNode.onreadystatechange = null;
+ this._iframeNode.onload = null;
+ this._iframeNode = null;
+ }
+ catch (exc)
+ {
+ this.warn("can't remove iframe node from dom.");
+ }
+ }
+
+ this._parameters = null;
+
+ for (var id in this._hidden)
+ {
+ if(this._hidden[id] && this._hidden[id].parentNode)
+ {
+ this._hidden[id].parentNode.removeChild(this._hidden[id]);
+ }
+ }
+
+ this._hidden = null;
+ }
+});
+
projects / lgpl / argeo-commons.git / blobdiff