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sample skeleton application with dojo toolkit & arcgis js api v 4.30
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dojo_app/js/library/dojox/drawing/tools/TextBlock.js

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define(["dojo", "dijit/registry", "../util/oo", "../manager/_registry", "../stencil/Text"],
function(dojo, dijit, oo, registry, StencilText){
var conEdit;
dojo.addOnLoad(function(){
// In order to use VML in IE, it's necessary to remove the
// DOCTYPE. But this has the side effect that causes a bug
// where contenteditable divs cannot be made dynamically.
// The solution is to include one in the main document
// that can be appended and removed as necessary:
// <div id="conEdit" contenteditable="true"></div>
// console.log("Removing conedit");
conEdit = dojo.byId("conEdit");
if(!conEdit){
console.error("A contenteditable div is missing from the main document. See 'dojox.drawing.tools.TextBlock'")
}else{
conEdit.parentNode.removeChild(conEdit);
}
});
var TextBlock = oo.declare(
// TODO - disable zoom while showing?
// FIXME:
// Handles width: auto, align:middle, etc. but for
// display only, edit is out of whack
StencilText,
function(options){
// summary:
// constructor
if(options.data){
var d = options.data;
var text = d.text ? this.typesetter(d.text) : d.text;
var w = !d.width ? this.style.text.minWidth : d.width=="auto" ? "auto" : Math.max(d.width, this.style.text.minWidth);
var h = this._lineHeight;
if(text && w=="auto"){
var o = this.measureText(this.cleanText(text, false), w);
w = o.w;
h = o.h;
}else{
// w = this.style.text.minWidth;
this._text = "";
}
this.points = [
{x:d.x, y:d.y},
{x:d.x+w, y:d.y},
{x:d.x+w, y:d.y+h},
{x:d.x, y:d.y+h}
];
if(d.showEmpty || text){
this.editMode = true;
dojo.disconnect(this._postRenderCon);
this._postRenderCon = null;
this.connect(this, "render", this, "onRender", true);
if(d.showEmpty){
this._text = text || "";
this.edit();
}else if(text && d.editMode){
this._text = "";
this.edit();
}else if(text){
this.render(text);
}
setTimeout(dojo.hitch(this, function(){
this.editMode = false;
}),100)
}else{
// Why make it if it won't render...
this.render();
}
}else{
this.connectMouse();
this._postRenderCon = dojo.connect(this, "render", this, "_onPostRender");
}
//console.log("TextBlock:", this.id)
},
{
// summary:
// A tool to create text fields on a canvas.
// description:
// Extends stencil.Text by adding an HTML layer that
// can be dragged out to a certain size, and accept
// a text entry. Will wrap text to the width of the
// html field.
// When created programmtically, use 'auto' to shrink
// the width to the size of the text. Use line breaks
// ( \n ) to create new lines.
draws:true,
baseRender:false,
type:"dojox.drawing.tools.TextBlock",
_caretStart: 0,
_caretEnd: 0,
_blockExec: false,
/*=====
StencilData: {
// summary:
// The data used to create the dojox.gfx Text
// x: Number
// Left point x
// y: Number
// Top point y
// width: Number|String?
// Optional width of Text. Not required but recommended.
// for auto-sizing, use 'auto'
// height: Number?
// Optional height of Text. If not provided, _lineHeight is used.
// text: String
// The string content. If not provided, may auto-delete depending on defaults.
},
=====*/
// selectOnExec: Boolean
// Whether the Stencil is selected when the text field
// is executed or not
selectOnExec:true,
// showEmpty: Boolean
// If true and there is no text in the data, the TextBlock
// Is displayed and focused and awaits input.
showEmpty: false,
onDrag: function(/*EventObject*/obj){
if(!this.parentNode){
this.showParent(obj);
}
var s = this._startdrag, e = obj.page;
this._box.left = (s.x < e.x ? s.x : e.x);
this._box.top = s.y;
this._box.width = (s.x < e.x ? e.x-s.x : s.x-e.x) + this.style.text.pad;
dojo.style(this.parentNode, this._box.toPx());
},
onUp: function(/*EventObject*/obj){
if(!this._downOnCanvas){ return; }
this._downOnCanvas = false;
var c = dojo.connect(this, "render", this, function(){
dojo.disconnect(c);
this.onRender(this);
});
this.editMode = true;
this.showParent(obj);
this.created = true;
this.createTextField();
this.connectTextField();
},
showParent: function(/*EventObject*/obj){
// summary:
// Internal. Builds the parent node for the
// contenteditable HTML node.
if(this.parentNode){ return; }
var x = obj.pageX || 10;
var y = obj.pageY || 10;
this.parentNode = dojo.doc.createElement("div");
this.parentNode.id = this.id;
var d = this.style.textMode.create;
this._box = {
left:x,
top:y,
width:obj.width || 1,
height:obj.height && obj.height>8 ? obj.height : this._lineHeight,
border:d.width+"px "+d.style+" "+d.color,
position:"absolute",
zIndex:500,
toPx: function(){
var o = {};
for(var nm in this){
o[nm] = typeof(this[nm])=="number" && nm!="zIndex" ? this[nm] + "px" : this[nm];
}
return o;
}
};
dojo.style(this.parentNode, this._box);
document.body.appendChild(this.parentNode);
},
createTextField: function(/*String*/txt){
// summary:
// Internal. Inserts the contenteditable HTML node
// into its parent node, and styles it.
// style parent
var d = this.style.textMode.edit;
this._box.border = d.width+"px "+d.style+" "+d.color;
this._box.height = "auto";
this._box.width = Math.max(this._box.width, this.style.text.minWidth*this.mouse.zoom);
dojo.style(this.parentNode, this._box.toPx());
// style input
this.parentNode.appendChild(conEdit);
dojo.style(conEdit, {
height: txt ? "auto" : this._lineHeight+"px",
fontSize:(this.textSize/this.mouse.zoom)+"px",
fontFamily:this.style.text.family
});
// FIXME:
// In Safari, if the txt ends with '&' it gets stripped
conEdit.innerHTML = txt || "";
return conEdit; //HTMLNode
},
connectTextField: function(){
// summary:
// Internal. Creates the connections to the
// contenteditable HTML node.
if(this._textConnected){ return; } // good ol' IE and its double events
// FIXME:
// Ouch-getting greekPalette by id. At the minimum this should
// be from the plugin manager
var greekPalette = dijit.byId("greekPalette");
var greekHelp = greekPalette==undefined ? false : true;
if(greekHelp){
//set it up
dojo.mixin(greekPalette,{
_pushChangeTo: conEdit,
_textBlock: this
});
};
this._textConnected = true;
this._dropMode = false;
this.mouse.setEventMode("TEXT");
this.keys.editMode(true);
var kc1, kc2, kc3, kc4, self = this, _autoSet = false,
exec = function(){
if(self._dropMode){ return; }
dojo.forEach([kc1,kc2,kc3,kc4], function(c){
dojo.disconnect(c)
});
self._textConnected = false;
self.keys.editMode(false);
self.mouse.setEventMode();
self.execText();
};
kc1 = dojo.connect(conEdit, "keyup", this, function(evt){
// if text is empty, we need a height so the field's height
// doesn't collapse
if(dojo.trim(conEdit.innerHTML) && !_autoSet){
dojo.style(conEdit, "height", "auto"); _autoSet = true;
}else if(dojo.trim(conEdit.innerHTML).length<2 && _autoSet){
dojo.style(conEdit, "height", this._lineHeight+"px"); _autoSet = false;
}
if(!this._blockExec){
if(evt.keyCode==13 || evt.keyCode==27){
dojo.stopEvent(evt);
exec();
}
} else {
if(evt.keyCode==dojo.keys.SPACE){
dojo.stopEvent(evt);
greekHelp && greekPalette.onCancel();
}
}
});
kc2 = dojo.connect(conEdit, "keydown", this, function(evt){
if(evt.keyCode==13 || evt.keyCode==27){ // TODO: make escape an option
dojo.stopEvent(evt);
}
// if backslash, user is inputting a special character
// This gives popup help.
if(evt.keyCode==220){
if(!greekHelp){
console.info("For greek letter assistance instantiate: dojox.drawing.plugins.drawing.GreekPalette");
return;
}
dojo.stopEvent(evt);
this.getSelection(conEdit);
// Differences in how browsers handle events made it necessary
// to stop the evt and add the backslash here.
this.insertText(conEdit,"\\");
this._dropMode = true;
this._blockExec = true;
greekPalette.show({
around:this.parentNode,
orient:{'BL':'TL'}
});
}
if(!this._dropMode){
this._blockExec = false;
} else {
// Controls for when we have a character helper and it's active
switch(evt.keyCode){
case dojo.keys.UP_ARROW:
case dojo.keys.DOWN_ARROW:
case dojo.keys.LEFT_ARROW:
case dojo.keys.RIGHT_ARROW:
dojo.stopEvent(evt);
greekPalette._navigateByArrow(evt);
break;
case dojo.keys.ENTER:
dojo.stopEvent(evt);
greekPalette._onCellClick(evt);
break;
case dojo.keys.BACKSPACE:
case dojo.keys.DELETE:
dojo.stopEvent(evt);
greekPalette.onCancel();
break;
}
}
});
kc3 = dojo.connect(document, "mouseup", this, function(evt){
// note: _onAnchor means an anchor has been clicked upon
if(!this._onAnchor && evt.target.id != "conEdit"){
dojo.stopEvent(evt);
exec();
}else if(evt.target.id == "conEdit" && conEdit.innerHTML == ""){
// wonky stuff happens when you click on the
// field when its empty.
conEdit.blur();
setTimeout(function(){
conEdit.focus();
},200)
}
});
this.createAnchors();
kc4 = dojo.connect(this.mouse, "setZoom", this, function(evt){
exec();
});
conEdit.focus();
this.onDown = function(){};
this.onDrag = function(){};
setTimeout(dojo.hitch(this, function(){
// once again for Silverlight:
conEdit.focus();
// this is a pretty odd chunk of code here.
// specifcally need to overwrite old onUp
// however, this still gets called. its
// not disconnecting.
this.onUp = function(){
if(!self._onAnchor && this.parentNode){
self.disconnectMouse();
exec();
self.onUp = function(){}
}
}
}), 500);
},
execText: function(){
// summary:
// Internal. Method fired when text is executed,
// via mouse-click-off, ESC key or Enter key.
var d = dojo.marginBox(this.parentNode);
var w = Math.max(d.w, this.style.text.minWidth);
var txt = this.cleanText(conEdit.innerHTML, true);
conEdit.innerHTML = "";
conEdit.blur();
this.destroyAnchors();
// need to convert characters before measuring width.
txt = this.typesetter(txt);
var o = this.measureText(txt, w);
var sc = this.mouse.scrollOffset();
var org = this.mouse.origin;
var x = this._box.left + sc.left - org.x;
var y = this._box.top + sc.top - org.y;
x *= this.mouse.zoom;
y *= this.mouse.zoom;
w *= this.mouse.zoom;
o.h *= this.mouse.zoom;
this.points = [
{x:x, y:y},
{x:x+w, y:y},
{x:x+w, y:y+o.h},
{x:x, y:y+o.h}
];
this.editMode = false;
console.log("EXEC TEXT::::", this._postRenderCon);
if(!o.text){
this._text = "";
this._textArray = [];
}
// Only for Combo objects (vectors, rectangle, or ellipse).
this.render(o.text);
this.onChangeText(this.getText());
},
edit: function(){
// summary:
// Internal?
// Method used to instantiate the contenteditable HTML node.
this.editMode = true;
var text = this.getText() || "";
console.log("EDIT TEXT:",text, " ",text.replace("/n", " "));
// NOTE: no mouse obj
if(this.parentNode || !this.points){ return; }
var d = this.pointsToData();
var sc = this.mouse.scrollOffset();
var org = this.mouse.origin;
var obj = {
pageX: (d.x ) / this.mouse.zoom - sc.left + org.x,
pageY: (d.y ) / this.mouse.zoom- sc.top + org.y,
width:d.width / this.mouse.zoom,
height:d.height / this.mouse.zoom
};
this.remove(this.shape, this.hit);
this.showParent(obj);
this.createTextField(text.replace("/n", " "));
this.connectTextField();
if(text){
//setTimeout(dojo.hitch(this, function(){
this.setSelection(conEdit, "end");
//}), 500)
}
},
cleanText: function(/*String*/txt, /*Boolean*/removeBreaks){
// summary:
// Cleans text. Strings HTML chars and double spaces
// and optionally removes line breaks.
var replaceHtmlCodes = function(str){
var chars = {
"&lt;":"<",
"&gt;":">",
"&amp;":"&"
};
for(var nm in chars){
str = str.replace(new RegExp(nm, "gi"), chars[nm])
}
return str
};
if(removeBreaks){
dojo.forEach(['<br>', '<br/>', '<br />', '\\n', '\\r'], function(br){
txt = txt.replace(new RegExp(br, 'gi'), " ");
});
}
txt = txt.replace(/&nbsp;/g, " ");
txt = replaceHtmlCodes(txt);
txt = dojo.trim(txt);
// remove double spaces, since SVG doesn't show them anyway
txt = txt.replace(/\s{2,}/g, " ");
return txt; //String
},
measureText: function(/* String */ str, /* ? Number */width){
// summary:
// Mechanism for measuring text.
// SVG nor VML have a way of determining the width or
// height of a block of text. This method creates an
// HTML text block and those measurements are used for
// displaying the SVG/VML text.
// str: String
// The text to display and measure.
// width: [optional] Number
// If the width is not provided, it will be assumed
// that the text is one line and the width will be
// measured and the _lineHeight used for th height.
// If width is provided, word-wrap is assumed, and
// line breaks will be inserted into the text at each
// point where a word wraps in the HTML. The height is
// then measured.
var r = "(<br\\s*/*>)|(\\n)|(\\r)";
this.showParent({width:width || "auto", height:"auto"});
this.createTextField(str);
var txt = "";
var el = conEdit;
el.innerHTML = "X";
var h = dojo.marginBox(el).h;
el.innerHTML = str;
if(!width || new RegExp(r, "gi").test(str)){
// has line breaks in text
txt = str.replace(new RegExp(r, "gi"), "\n");
el.innerHTML = str.replace(new RegExp(r, "gi"), "<br/>");
}else if(dojo.marginBox(el).h == h){
// one line
txt = str;
}else{
// text wraps
var ar = str.split(" ");
var strAr = [[]];
var line = 0;
el.innerHTML = "";
while(ar.length){
var word = ar.shift();
el.innerHTML += word+" "; //urk, always an extra space
if(dojo.marginBox(el).h > h){
line++;
strAr[line] = [];
el.innerHTML = word+" ";
}
strAr[line].push(word)
}
dojo.forEach(strAr, function(ar, i){
strAr[i] = ar.join(" ");
});
txt = strAr.join("\n");
// get the resultant height
el.innerHTML = txt.replace("\n", "<br/>");
}
var dim = dojo.marginBox(el);
conEdit.parentNode.removeChild(conEdit);
dojo.destroy(this.parentNode);
this.parentNode = null;
return {h:dim.h, w:dim.w, text:txt}; //Object
},
_downOnCanvas:false,
onDown: function(/*EventObject*/obj){
this._startdrag = {
x: obj.pageX,
y: obj.pageY
};
dojo.disconnect(this._postRenderCon);
this._postRenderCon = null;
this._downOnCanvas = true;
},
createAnchors: function(){
// summary:
// Internal. Creates HTML nodes at each corner
// of the contenteditable div. These nodes are
// draggable and will resize the div horizontally.
this._anchors = {};
var self = this;
var d = this.style.anchors,
b = d.width,
w = d.size-b*2,
h = d.size-b*2,
p = (d.size)/2*-1 + "px";
var s = {
position:"absolute",
width:w+"px",
height:h+"px",
backgroundColor:d.fill,
border:b+"px " + d.style + " "+d.color
};
if(dojo.isIE){
s.paddingLeft = w + "px";
s.fontSize = w + "px"
}
var ss = [
{top: p, left:p},
{top:p, right:p},
{bottom:p, right:p},
{bottom:p,left:p}
];
for(var i=0;i<4;i++){
var isLeft = (i==0) || (i==3);
var id = this.util.uid(isLeft ? "left_anchor" : "right_anchor");
var a = dojo.create("div", {id:id}, this.parentNode);
dojo.style(a, dojo.mixin(dojo.clone(s), ss[i]));
var md, mm, mu;
var md = dojo.connect(a, "mousedown", this, function(evt){
isLeft = evt.target.id.indexOf("left")>-1;
self._onAnchor = true;
var orgX = evt.pageX;
var orgW = this._box.width;
dojo.stopEvent(evt);
mm = dojo.connect(document, "mousemove", this, function(evt){
var x = evt.pageX;
if(isLeft){
this._box.left = x;
this._box.width = orgW + orgX - x;
}else{
this._box.width = x + orgW - orgX;
}
dojo.style(this.parentNode, this._box.toPx());
});
mu = dojo.connect(document, "mouseup", this, function(evt){
orgX = this._box.left;
orgW = this._box.width;
dojo.disconnect(mm);
dojo.disconnect(mu);
self._onAnchor = false;
conEdit.focus();
dojo.stopEvent(evt);
});
});
this._anchors[id] = {
a:a,
cons:[md]
}
}
},
destroyAnchors: function(){
// summary:
// Internal. Destroys HTML anchors.
for(var n in this._anchors){
dojo.forEach(this._anchors[n].con, dojo.disconnect, dojo);
dojo.destroy(this._anchors[n].a);
};
},
setSavedCaret: function(val){
// summary:
// Internal, called when caret needs to
// be moved into position after text is added
this._caretStart = this._caretEnd = val;
},
getSavedCaret: function(){
return {start: this._caretStart, end: this._caretEnd}
},
insertText: function(node,val){
// summary:
// Uses saved caret position to insert text
// into position and place caret at the end of
// insertion
var t, text = node.innerHTML;
var caret = this.getSavedCaret();
text = text.replace(/&nbsp;/g, " ");
t = text.substr(0,caret.start) + val + text.substr(caret.end);
t = this.cleanText(t,true);
this.setSavedCaret(Math.min(t.length,(caret.end + val.length)));
node.innerHTML = t;
this.setSelection(node,"stored");
},
getSelection: function(node){
// summary:
// This gets and stores the caret position
// in the contentEditable div (conEdit).
// NOTE: Doesn't work with html nodes inside
// the div.
var start, end;
if(dojo.doc.selection){
var r = dojo.doc.selection.createRange();
var rs = dojo.body().createTextRange();
rs.moveToElementText(node);
var re = rs.duplicate();
rs.moveToBookmark(r.getBookmark());
re.setEndPoint('EndToStart', rs);
start = this._caretStart = re.text.length;
end = this._caretEnd = re.text.length+r.text.length;
console.warn("Caret start: ",start," end: ",end," length: ",re.text.length," text: ",re.text);
} else {
this._caretStart = dojo.global.getSelection().getRangeAt(node).startOffset;
this._caretEnd = dojo.global.getSelection().getRangeAt(node).endOffset;
console.log("Caret start: ", this._caretStart," end: ", this._caretEnd);
}
},
setSelection: function(node, what){
// summary:
// Used for placing the cursor during edits and character help.
// Takes the values: end, beg, start, all or any numerical value
// (in which case the number will constitute the caret position)
console.warn("setSelection:");
if(dojo.doc.selection){ // IE
var rs = dojo.body().createTextRange();
rs.moveToElementText(node);
switch(what){
case "end":
rs.collapse(false);
break;
case "beg" || "start":
rs.collapse();
break;
case "all":
rs.collapse();
rs.moveStart("character", 0);
rs.moveEnd("character",node.text.length);
break;
case "stored":
rs.collapse();
var dif = this._caretStart-this._caretEnd;
//console.log("start: ",this._caretStart, " end: ",this._caretEnd," dif: ",dif);
rs.moveStart("character",this._caretStart);
rs.moveEnd("character",dif);
break;
}
rs.select();
}else{
var getAllChildren = function(node, children){
children = children || [];
for(var i=0;i<node.childNodes.length; i++){
var n = node.childNodes[i];
if(n.nodeType==3){
children.push(n);
}else if(n.tagName && n.tagName.toLowerCase()=="img"){
children.push(n);
}
if(n.childNodes && n.childNodes.length){
getAllChildren(n, children);
}
}
return children;
};
console.log("ff node:", node);
node.focus();
var selection = dojo.global.getSelection();
selection.removeAllRanges();
var r = dojo.doc.createRange();
var nodes = getAllChildren(node);
switch(what){
case "end":
console.log("len:", nodes[nodes.length - 1].textContent.length);
r.setStart(nodes[nodes.length - 1], nodes[nodes.length - 1].textContent.length);
r.setEnd(nodes[nodes.length - 1], nodes[nodes.length - 1].textContent.length);
break;
case "beg" || "start":
r.setStart(nodes[0], 0);
r.setEnd(nodes[0], 0);
break;
case "all":
r.setStart(nodes[0], 0);
r.setEnd(nodes[nodes.length - 1], nodes[nodes.length - 1].textContent.length);
break;
case "stored":
console.log("Caret start: ",this._caretStart," caret end: ",this._caretEnd);
r.setStart(nodes[0], this._caretStart);
r.setEnd(nodes[0], this._caretEnd);
}
selection.addRange(r);
console.log("sel ", what, " on ", node);
}
}
}
);
dojo.setObject("dojox.drawing.tools.TextBlock", TextBlock);
TextBlock.setup = {
name:"dojox.drawing.tools.TextBlock",
tooltip:"Text Tool",
iconClass:"iconText"
};
registry.register(TextBlock.setup, "tool");
return TextBlock;
});