- Author:
- David Nickerson <david.nickerson@gmail.com>
- Date:
- 2021-09-17 15:50:49+12:00
- Desc:
- tweak html formatting
- Permanent Source URI:
- https://staging.physiomeproject.org/workspace/a1/rawfile/1b3862589abf79ae9119ee0b5e99a8b785d762e1/dojo-presentation/js/dojo/dijit/ColorPalette.js
dojo.provide("dijit.ColorPalette");
dojo.require("dijit._Widget");
dojo.require("dijit._Templated");
dojo.require("dojo.colors");
dojo.require("dojo.i18n");
dojo.requireLocalization("dojo", "colors");
dojo.declare("dijit.ColorPalette",
[dijit._Widget, dijit._Templated],
{
// summary: A keyboard accessible color-picking widget
// description:
// Grid showing various colors, so the user can pick a certain color
// Can be used standalone, or as a popup.
//
// example:
// | <div dojoType="dijit.ColorPalette"></div>
//
// example:
// | var picker = new dijit.ColorPalette({ },srcNode);
// | picker.startup();
//
// defaultTimeout: Number
// number of milliseconds before a held key or button becomes typematic
defaultTimeout: 500,
// timeoutChangeRate: Number
// fraction of time used to change the typematic timer between events
// 1.0 means that each typematic event fires at defaultTimeout intervals
// < 1.0 means that each typematic event fires at an increasing faster rate
timeoutChangeRate: 0.90,
// palette: String
// Size of grid, either "7x10" or "3x4".
palette: "7x10",
//_value: String
// The value of the selected color.
value: null,
//_currentFocus: Integer
// Index of the currently focused color.
_currentFocus: 0,
// _xDim: Integer
// This is the number of colors horizontally across.
_xDim: null,
// _yDim: Integer
/// This is the number of colors vertically down.
_yDim: null,
// _palettes: Map
// This represents the value of the colors.
// The first level is a hashmap of the different arrays available
// The next two dimensions represent the columns and rows of colors.
_palettes: {
"7x10": [["white", "seashell", "cornsilk", "lemonchiffon","lightyellow", "palegreen", "paleturquoise", "lightcyan", "lavender", "plum"],
["lightgray", "pink", "bisque", "moccasin", "khaki", "lightgreen", "lightseagreen", "lightskyblue", "cornflowerblue", "violet"],
["silver", "lightcoral", "sandybrown", "orange", "palegoldenrod", "chartreuse", "mediumturquoise", "skyblue", "mediumslateblue","orchid"],
["gray", "red", "orangered", "darkorange", "yellow", "limegreen", "darkseagreen", "royalblue", "slateblue", "mediumorchid"],
["dimgray", "crimson", "chocolate", "coral", "gold", "forestgreen", "seagreen", "blue", "blueviolet", "darkorchid"],
["darkslategray","firebrick","saddlebrown", "sienna", "olive", "green", "darkcyan", "mediumblue","darkslateblue", "darkmagenta" ],
["black", "darkred", "maroon", "brown", "darkolivegreen", "darkgreen", "midnightblue", "navy", "indigo", "purple"]],
"3x4": [["white", "lime", "green", "blue"],
["silver", "yellow", "fuchsia", "navy"],
["gray", "red", "purple", "black"]]
},
// _imagePaths: Map
// This is stores the path to the palette images
_imagePaths: {
"7x10": dojo.moduleUrl("dijit", "templates/colors7x10.png"),
"3x4": dojo.moduleUrl("dijit", "templates/colors3x4.png")
},
// _paletteCoords: Map
// This is a map that is used to calculate the coordinates of the
// images that make up the palette.
_paletteCoords: {
"leftOffset": 3, "topOffset": 3,
"cWidth": 20, "cHeight": 20
},
// templatePath: String
// Path to the template of this widget.
templatePath: dojo.moduleUrl("dijit", "templates/ColorPalette.html"),
// _paletteDims: Object
// Size of the supported palettes for alignment purposes.
_paletteDims: {
"7x10": {"width": "206px", "height": "145px"},
"3x4": {"width": "86px", "height": "64px"}
},
// tabIndex: String
// Widget tabindex.
tabIndex: "0",
postCreate: function(){
// A name has to be given to the colorMap, this needs to be unique per Palette.
dojo.mixin(this.divNode.style, this._paletteDims[this.palette]);
this.imageNode.setAttribute("src", this._imagePaths[this.palette]);
var choices = this._palettes[this.palette];
this.domNode.style.position = "relative";
this._cellNodes = [];
this.colorNames = dojo.i18n.getLocalization("dojo", "colors", this.lang);
var url = this._blankGif,
colorObject = new dojo.Color(),
coords = this._paletteCoords;
for(var row=0; row < choices.length; row++){
for(var col=0; col < choices[row].length; col++) {
var imgNode = dojo.doc.createElement("img");
imgNode.src = url;
dojo.addClass(imgNode, "dijitPaletteImg");
var color = choices[row][col],
colorValue = colorObject.setColor(dojo.Color.named[color]);
imgNode.alt = this.colorNames[color];
imgNode.color = colorValue.toHex();
var imgStyle = imgNode.style;
imgStyle.color = imgStyle.backgroundColor = imgNode.color;
var cellNode = dojo.doc.createElement("span");
cellNode.appendChild(imgNode);
dojo.forEach(["Dijitclick", "MouseEnter", "Focus", "Blur"], function(handler) {
this.connect(cellNode, "on" + handler.toLowerCase(), "_onCell" + handler);
}, this);
this.divNode.appendChild(cellNode);
var cellStyle = cellNode.style;
cellStyle.top = coords.topOffset + (row * coords.cHeight) + "px";
cellStyle.left = coords.leftOffset + (col * coords.cWidth) + "px";
dojo.attr(cellNode, "tabindex", "-1");
cellNode.title = this.colorNames[color];
dojo.addClass(cellNode, "dijitPaletteCell");
dijit.setWaiRole(cellNode, "gridcell");
cellNode.index = this._cellNodes.length;
this._cellNodes.push(cellNode);
}
}
this._xDim = choices[0].length;
this._yDim = choices.length;
this.connect(this.divNode, "onfocus", "_onDivNodeFocus");
// Now set all events
// The palette itself is navigated to with the tab key on the keyboard
// Keyboard navigation within the Palette is with the arrow keys
// Spacebar selects the color.
// For the up key the index is changed by negative the x dimension.
var keyIncrementMap = {
UP_ARROW: -this._xDim,
// The down key the index is increase by the x dimension.
DOWN_ARROW: this._xDim,
// Right and left move the index by 1.
RIGHT_ARROW: 1,
LEFT_ARROW: -1
};
for(var key in keyIncrementMap){
this._connects.push(dijit.typematic.addKeyListener(this.domNode,
{charOrCode:dojo.keys[key], ctrlKey:false, altKey:false, shiftKey:false},
this,
function(){
var increment = keyIncrementMap[key];
return function(count){ this._navigateByKey(increment, count); };
}(),
this.timeoutChangeRate, this.defaultTimeout));
}
},
focus: function(){
// summary:
// Focus this ColorPalette. Puts focus on the first swatch.
this._focusFirst();
},
onChange: function(color){
// summary:
// Callback when a color is selected.
// color: String
// Hex value corresponding to color.
// console.debug("Color selected is: "+color);
},
_focusFirst: function(){
this._currentFocus = 0;
var cellNode = this._cellNodes[this._currentFocus];
window.setTimeout(function(){dijit.focus(cellNode)}, 0);
},
_onDivNodeFocus: function(evt){
// focus bubbles on Firefox 2, so just make sure that focus has really
// gone to the container
if(evt.target === this.divNode){
this._focusFirst();
}
},
_onFocus: function(){
// while focus is on the palette, set its tabindex to -1 so that on a
// shift-tab from a cell, the container is not in the tab order
dojo.attr(this.divNode, "tabindex", "-1");
},
_onBlur: function(){
this._removeCellHighlight(this._currentFocus);
// when focus leaves the palette, restore its tabindex, since it was
// modified by _onFocus().
dojo.attr(this.divNode, "tabindex", this.tabIndex);
},
_onCellDijitclick: function(/*Event*/ evt){
// summary:
// Handler for click, enter key & space key. Selects the color.
// evt:
// The event.
var target = evt.currentTarget;
if (this._currentFocus != target.index){
this._currentFocus = target.index;
window.setTimeout(function(){dijit.focus(target)}, 0);
}
this._selectColor(target);
dojo.stopEvent(evt);
},
_onCellMouseEnter: function(/*Event*/ evt){
// summary:
// Handler for onMouseOver. Put focus on the color under the mouse.
// evt:
// The mouse event.
var target = evt.currentTarget;
this._setCurrent(target); // redundant, but needed per safari bug where onCellFocus never called
window.setTimeout(function(){dijit.focus(target)}, 0);
},
_onCellFocus: function(/*Event*/ evt){
// summary:
// Handler for onFocus. Removes highlight of
// the color that just lost focus, and highlights
// the new color.
// evt:
// The focus event.
this._setCurrent(evt.currentTarget);
},
_setCurrent: function(/*Node*/ node){
// summary:
// Called when color is hovered or focused.
// description:
// Removes highlight of the old color, and highlights
// the new color.
this._removeCellHighlight(this._currentFocus);
this._currentFocus = node.index;
dojo.addClass(node, "dijitPaletteCellHighlight");
},
_onCellBlur: function(/*Event*/ evt){
// summary:
// needed for Firefox 2 on Mac OS X
this._removeCellHighlight(this._currentFocus);
},
_removeCellHighlight: function(index){
dojo.removeClass(this._cellNodes[index], "dijitPaletteCellHighlight");
},
_selectColor: function(selectNode){
// summary:
// This selects a color. It triggers the onChange event
// area:
// The area node that covers the color being selected.
var img = selectNode.getElementsByTagName("img")[0];
this.onChange(this.value = img.color);
},
_navigateByKey: function(increment, typeCount){
// summary:
// This is the callback for typematic.
// It changes the focus and the highlighed color.
// increment:
// How much the key is navigated.
// typeCount:
// How many times typematic has fired.
// typecount == -1 means the key is released.
if(typeCount == -1){ return; }
var newFocusIndex = this._currentFocus + increment;
if(newFocusIndex < this._cellNodes.length && newFocusIndex > -1)
{
var focusNode = this._cellNodes[newFocusIndex];
focusNode.focus();
}
}
});
