262 lines
12 KiB
JavaScript
262 lines
12 KiB
JavaScript
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if(!dojo._hasResource["dijit.form.Textarea"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dijit.form.Textarea"] = true;
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dojo.provide("dijit.form.Textarea");
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dojo.require("dijit.form._FormWidget");
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dojo.require("dojo.i18n");
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dojo.requireLocalization("dijit.form", "Textarea", null, "zh,pt,da,tr,ru,de,ROOT,sv,ja,he,fi,nb,el,ar,pt-pt,cs,fr,es,ko,nl,zh-tw,pl,it,hu");
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dojo.declare(
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"dijit.form.Textarea",
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dijit.form._FormValueWidget,
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{
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// summary: A resizing textarea widget
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//
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// description:
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// A textarea that resizes vertically to contain the data.
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// Takes nearly all the parameters (name, value, etc.) that a vanilla textarea takes.
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// Cols is not supported and the width should be specified with style width.
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// Rows is not supported since this widget adjusts the height.
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//
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// example:
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// | <textarea dojoType="dijit.form.TextArea">...</textarea>
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//
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attributeMap: dojo.mixin(dojo.clone(dijit.form._FormValueWidget.prototype.attributeMap),
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{style:"styleNode", 'class':"styleNode"}),
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templateString: (dojo.isIE || dojo.isSafari || dojo.isFF) ?
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((dojo.isIE || dojo.isSafari || dojo.isFF >= 3) ? '<fieldset id="${id}" class="dijitInline dijitInputField dijitTextArea" dojoAttachPoint="styleNode" waiRole="presentation"><div dojoAttachPoint="editNode,focusNode,eventNode" dojoAttachEvent="onpaste:_changing,oncut:_changing" waiRole="textarea" style="text-decoration:none;display:block;overflow:auto;" contentEditable="true"></div>'
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: '<span id="${id}" class="dijitReset">'+
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'<iframe src="javascript:<html><head><title>${_iframeEditTitle}</title></head><body><script>var _postCreate=window.frameElement?window.frameElement.postCreate:null;if(_postCreate)_postCreate();</script></body></html>"'+
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' dojoAttachPoint="iframe,styleNode" dojoAttachEvent="onblur:_onIframeBlur" class="dijitInline dijitInputField dijitTextArea"></iframe>')
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+ '<textarea name="${name}" value="${value}" dojoAttachPoint="formValueNode" style="display:none;"></textarea>'
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+ ((dojo.isIE || dojo.isSafari || dojo.isFF >= 3) ? '</fieldset>':'</span>')
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: '<textarea id="${id}" name="${name}" value="${value}" dojoAttachPoint="formValueNode,editNode,focusNode,styleNode" class="dijitInputField dijitTextArea">'+dojo.isFF+'</textarea>',
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setAttribute: function(/*String*/ attr, /*anything*/ value){
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this.inherited(arguments);
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switch(attr){
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case "disabled":
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this.formValueNode.disabled = this.disabled;
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case "readOnly":
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if(dojo.isIE || dojo.isSafari || dojo.isFF >= 3){
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this.editNode.contentEditable = (!this.disabled && !this.readOnly);
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}else if(dojo.isFF){
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this.iframe.contentDocument.designMode = (this.disabled || this.readOnly)? "off" : "on";
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}
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}
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},
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focus: function(){
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// summary: Received focus, needed for the InlineEditBox widget
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if(!this.disabled && !this.readOnly){
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this._changing(); // set initial height
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}
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dijit.focus(this.iframe || this.focusNode);
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},
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setValue: function(/*String*/ value, /*Boolean, optional*/ priorityChange){
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var editNode = this.editNode;
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if(typeof value == "string"){
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editNode.innerHTML = ""; // wipe out old nodes
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if(value.split){
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var _this=this;
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var isFirst = true;
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dojo.forEach(value.split("\n"), function(line){
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if(isFirst){ isFirst = false; }
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else{
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editNode.appendChild(dojo.doc.createElement("BR")); // preserve line breaks
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}
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if(line){
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editNode.appendChild(dojo.doc.createTextNode(line)); // use text nodes so that imbedded tags can be edited
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}
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});
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}else if(value){
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editNode.appendChild(dojo.doc.createTextNode(value));
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}
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if(!dojo.isIE){
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editNode.appendChild(dojo.doc.createElement("BR")); // so that you see a cursor
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}
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}else{
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// blah<BR>blah --> blah\nblah
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// <P>blah</P><P>blah</P> --> blah\nblah
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// <DIV>blah</DIV><DIV>blah</DIV> --> blah\nblah
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// &<> -->&< >
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value = editNode.innerHTML;
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if(this.iframe){ // strip sizeNode
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value = value.replace(/<div><\/div>\r?\n?$/i,"");
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}
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value = value.replace(/\s*\r?\n|^\s+|\s+$| /g,"").replace(/>\s+</g,"><").replace(/<\/(p|div)>$|^<(p|div)[^>]*>/gi,"").replace(/([^>])<div>/g,"$1\n").replace(/<\/p>\s*<p[^>]*>|<br[^>]*>|<\/div>\s*<div[^>]*>/gi,"\n").replace(/<[^>]*>/g,"").replace(/&/gi,"\&").replace(/</gi,"<").replace(/>/gi,">");
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if(!dojo.isIE){
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value = value.replace(/\n$/,""); // remove added <br>
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}
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}
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this.value = this.formValueNode.value = value;
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if(this.iframe){
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var sizeNode = dojo.doc.createElement('div');
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editNode.appendChild(sizeNode);
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var newHeight = sizeNode.offsetTop;
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if(editNode.scrollWidth > editNode.clientWidth){ newHeight+=16; } // scrollbar space needed?
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if(this.lastHeight != newHeight){ // cache size so that we don't get a resize event because of a resize event
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if(newHeight == 0){ newHeight = 16; } // height = 0 causes the browser to not set scrollHeight
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dojo.contentBox(this.iframe, {h: newHeight});
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this.lastHeight = newHeight;
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}
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editNode.removeChild(sizeNode);
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}
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dijit.form.Textarea.superclass.setValue.call(this, this.getValue(), priorityChange);
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},
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getValue: function(){
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return this.value.replace(/\r/g,"");
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},
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postMixInProperties: function(){
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this.inherited(arguments);
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// don't let the source text be converted to a DOM structure since we just want raw text
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if(this.srcNodeRef && this.srcNodeRef.innerHTML != ""){
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this.value = this.srcNodeRef.innerHTML;
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this.srcNodeRef.innerHTML = "";
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}
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if((!this.value || this.value == "") && this.srcNodeRef && this.srcNodeRef.value){
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this.value = this.srcNodeRef.value;
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}
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if(!this.value){ this.value = ""; }
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this.value = this.value.replace(/\r\n/g,"\n").replace(/>/g,">").replace(/</g,"<").replace(/&/g,"&");
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if(dojo.isFF == 2){
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// In the case of Firefox an iframe is used and when the text gets focus,
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// focus is fired from the document object. There isn't a way to put a
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// waiRole on the document object and as a result screen readers don't
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// announce the role. As a result screen reader users are lost.
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//
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// An additional problem is that the browser gives the document object a
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// very cryptic accessible name, e.g.
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// wysiwyg://13/http://archive.dojotoolkit.org/nightly/dojotoolkit/dijit/tests/form/test_InlineEditBox.html
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// When focus is fired from the document object, the screen reader speaks
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// the accessible name. The cyptic accessile name is confusing.
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//
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// A workaround for both of these problems is to give the iframe's
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// document a title, the name of which is similar to a role name, i.e.
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// "edit area". This will be used as the accessible name which will replace
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// the cryptic name and will also convey the role information to the user.
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// Because it is read directly to the user, the string must be localized.
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// In addition, since a <label> element can not be associated with an iframe, if
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// this control has a label, insert the label text into the title as well.
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var _nlsResources = dojo.i18n.getLocalization("dijit.form", "Textarea");
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this._iframeEditTitle = _nlsResources.iframeEditTitle;
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this._iframeFocusTitle = _nlsResources.iframeFocusTitle;
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var label=dojo.query('label[for="'+this.id+'"]');
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if(label.length){
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this._iframeEditTitle = label[0].innerHTML + " " + this._iframeEditTitle;
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}
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var body = this.focusNode = this.editNode = dojo.doc.createElement('BODY');
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body.style.margin="0px";
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body.style.padding="0px";
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body.style.border="0px";
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}
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},
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postCreate: function(){
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if(dojo.isIE || dojo.isSafari || dojo.isFF >= 3){
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this.domNode.style.overflowY = 'hidden';
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}else if(dojo.isFF){
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var w = this.iframe.contentWindow;
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var title = '';
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try { // #4715: peeking at the title can throw a security exception during iframe setup
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title = this.iframe.contentDocument.title;
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} catch(e) {}
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if(!w || !title){
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this.iframe.postCreate = dojo.hitch(this, this.postCreate);
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return;
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}
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var d = w.document;
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d.getElementsByTagName('HTML')[0].replaceChild(this.editNode, d.getElementsByTagName('BODY')[0]);
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if(!this.isLeftToRight()){
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d.getElementsByTagName('HTML')[0].dir = "rtl";
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}
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this.iframe.style.overflowY = 'hidden';
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this.eventNode = d;
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// this.connect won't destroy this handler cleanly since its on the iframe's window object
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// resize is a method of window, not document
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w.addEventListener("resize", dojo.hitch(this, this._changed), false); // resize is only on the window object
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}else{
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this.focusNode = this.domNode;
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}
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if(this.eventNode){
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this.connect(this.eventNode, "keypress", this._onKeyPress);
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this.connect(this.eventNode, "mousemove", this._changed);
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this.connect(this.eventNode, "focus", this._focused);
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this.connect(this.eventNode, "blur", this._blurred);
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}
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if(this.editNode){
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this.connect(this.editNode, "change", this._changed); // needed for mouse paste events per #3479
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}
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this.inherited('postCreate', arguments);
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},
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// event handlers, you can over-ride these in your own subclasses
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_focused: function(e){
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dojo.addClass(this.iframe||this.domNode, "dijitInputFieldFocused");
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this._changed(e);
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},
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_blurred: function(e){
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dojo.removeClass(this.iframe||this.domNode, "dijitInputFieldFocused");
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this._changed(e, true);
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},
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_onIframeBlur: function(){
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// Reset the title back to "edit area".
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this.iframe.contentDocument.title = this._iframeEditTitle;
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},
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_onKeyPress: function(e){
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if(e.keyCode == dojo.keys.TAB && !e.shiftKey && !e.ctrlKey && !e.altKey && this.iframe){
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// Pressing the tab key in the iframe (with designMode on) will cause the
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// entry of a tab character so we have to trap that here. Since we don't
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// know the next focusable object we put focus on the iframe and then the
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// user has to press tab again (which then does the expected thing).
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// A problem with that is that the screen reader user hears "edit area"
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// announced twice which causes confusion. By setting the
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// contentDocument's title to "edit area frame" the confusion should be
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// eliminated.
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this.iframe.contentDocument.title = this._iframeFocusTitle;
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// Place focus on the iframe. A subsequent tab or shift tab will put focus
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// on the correct control.
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// Note: Can't use this.focus() because that results in a call to
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// dijit.focus and if that receives an iframe target it will set focus
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// on the iframe's contentWindow.
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this.iframe.focus(); // this.focus(); won't work
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dojo.stopEvent(e);
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}else if(e.keyCode == dojo.keys.ENTER){
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e.stopPropagation();
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}else if(this.inherited("_onKeyPress", arguments) && this.iframe){
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// #3752:
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// The key press will not make it past the iframe.
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// If a widget is listening outside of the iframe, (like InlineEditBox)
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// it will not hear anything.
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// Create an equivalent event so everyone else knows what is going on.
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var te = dojo.doc.createEvent("KeyEvents");
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te.initKeyEvent("keypress", true, true, null, e.ctrlKey, e.altKey, e.shiftKey, e.metaKey, e.keyCode, e.charCode);
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this.iframe.dispatchEvent(te);
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}
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this._changing();
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},
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_changing: function(e){
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// summary: event handler for when a change is imminent
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setTimeout(dojo.hitch(this, "_changed", e, false), 1);
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},
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_changed: function(e, priorityChange){
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// summary: event handler for when a change has already happened
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if(this.iframe && this.iframe.contentDocument.designMode != "on" && !this.disabled && !this.readOnly){
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this.iframe.contentDocument.designMode="on"; // in case this failed on init due to being hidden
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}
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this.setValue(null, priorityChange || false);
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}
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});
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}
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