- Author:
- David Nickerson <nickerso@users.sourceforge.net>
- Date:
- 2009-07-16 02:00:03+12:00
- Desc:
- the starting point for the HH tutorial example
- Permanent Source URI:
- https://models.fieldml.org/workspace/a1/rawfile/f6a8f90307388eb4b040ee3566b84d88b59247f7/dojo-presentation/js/dojo/dojox/html/styles.js
dojo.provide("dojox.html.styles");
// summary
// Methods for creating and minipulating dynamic CSS Styles and Style Sheets
//
// USAGE:
// | dojox.html.createStyle("#myDiv input", "font-size:24px");
// Creates Style #myDiv input, which can now be applied to myDiv, and
// the inner input will be targeted
// | dojox.html.createStyle(".myStyle", "color:#FF0000");
// Now the class myStyle can be assigned to a node's className
(function(){
var dynamicStyleMap = {};
var pageStyleSheets = {};
var titledSheets = [];
var styleIndicies = [];
dojox.html.insertCssRule = function(selector, declaration, styleSheetName){
// summary
// Creates a style and attaches it to a dynamically created stylesheet
// arguments:
// selector:
// A fully qualified class name, as it would appear in
// a CSS dojo.doc. Start classes with periods, target
// nodes with '#'. Large selectors can also be created
// like:
// | "#myDiv.myClass span input"
// declaration:
// A single string that would make up a style block, not
// including the curly braces. Include semi-colons between
// statements. Do not use JavaScript style declarations
// in camel case, use as you would in a CSS dojo.doc:
// | "color:#ffoooo;font-size:12px;margin-left:5px;"
// styleSheetName: ( optional )
// Name of the dynamic style sheet this rule should be
// inserted into. If is not found by that name, it is
// created. If no name is passed, the name "default" is
// used.
//
var ss = dojox.html.getDynamicStyleSheet(styleSheetName);
var styleText = selector + " {" + declaration + "}";
if(dojo.isIE){
// Note: check for if(ss.cssText) does not work
ss.cssText+=styleText;
}else if(ss.sheet){
ss.sheet.insertRule(styleText, ss._indicies.length);
}else{
ss.appendChild(dojo.doc.createTextNode(styleText));
}
ss._indicies.push(selector+" "+declaration);
return selector;
}
dojox.html.removeCssRule = function(selector, declaration, styleSheetName){
// summary
// Removes a cssRule base on the selector and declaration passed
// The declaration is needed for cases of dupe selectors
// NOTE: Only removes DYNAMICALLY created cssRules. If you
// created it with dojox.html.insertCssRule, it can be removed.
//
var ss;
var index=-1;
for(var nm in dynamicStyleMap){
if(styleSheetName && styleSheetName!=nm) {continue;}
ss = dynamicStyleMap[nm];
for(var i=0;i<ss._indicies.length;i++){
if(selector+" "+declaration == ss._indicies[i]){
index = i;
break;
}
}
if(index>-1) { break; }
}
if(!ss){
console.log("No dynamic style sheet has been created from which to remove a rule.");
return false;
}
if(index==-1){
console.log("The css rule was not found and could not be removed.");
return false;
}
ss._indicies.splice(index, 1);
if(dojo.isIE){
// Note: check for if(ss.removeRule) does not work
ss.removeRule(index);
}else if(ss.sheet){
ss.sheet.deleteRule(index);
}else if(document.styleSheets[0]){
console.log("what browser hath useth thith?")
//
}
return true;
}
/*
dojox.html.modifyCssRule = function(selector, declaration, styleSheetName){
Not implemented - it seems to have some merit for changing some complex
selectors. It's not much use for changing simple ones like "span".
For now, simply write a new rule which will cascade over the first.
// summary
// Modfies an existing cssRule
}
*/
dojox.html.getStyleSheet = function(styleSheetName){
// summary
// Returns a style sheet based on the argument.
// Searches dynamic style sheets first. If no matches,
// searches document style sheets.
//
// argument: (optional)
// A title or an href to a style sheet. Title can be
// an attribute in a tag, or a dynamic style sheet
// reference. Href can be the name of the file.
// If no argument, the assumed crated dynamic style
// sheet is used.
// try dynamic sheets first
if(dynamicStyleMap[styleSheetName || "default"]){
return dynamicStyleMap[styleSheetName || "default"];
}
if(!styleSheetName){
// no arg is nly good for the default style sheet
// and it has not been created yet.
return false;
}
var allSheets = dojox.html.getStyleSheets();
// now try document style sheets by name
if(allSheets[styleSheetName]){
return dojox.html.getStyleSheets()[styleSheetName];
}
// check for partial matches in hrefs (so that a fully
//qualified name does not have to be passed)
for ( var nm in allSheets){
if( allSheets[nm].href && allSheets[nm].href.indexOf(styleSheetName)>-1){
return allSheets[nm];
}
}
return false;
}
dojox.html.getDynamicStyleSheet = function(styleSheetName){
// summary
// Creates and returns a dynamically created style sheet
// used for dynamic styles
//
// argument:
// styleSheetName /* optional String */
// The name given the style sheet so that multiple
// style sheets can be created and referenced. If
// no argument is given, the name "default" is used.
//
if(!styleSheetName){ styleSheetName="default"; }
if(!dynamicStyleMap[styleSheetName]){
if(dojo.doc.createStyleSheet){ //IE
dynamicStyleMap[styleSheetName] = dojo.doc.createStyleSheet(styleSheetName);
dynamicStyleMap[styleSheetName].title = styleSheetName;
}else{
dynamicStyleMap[styleSheetName] = dojo.doc.createElement("style");
dynamicStyleMap[styleSheetName].setAttribute("type", "text/css");
dojo.doc.getElementsByTagName("head")[0].appendChild(dynamicStyleMap[styleSheetName]);
console.log(styleSheetName, " ss created: ", dynamicStyleMap[styleSheetName].sheet);
}
dynamicStyleMap[styleSheetName]._indicies = [];
}
return dynamicStyleMap[styleSheetName];
}
dojox.html.enableStyleSheet = function(styleSheetName){
// summary
// Enables the style sheet with the name passed in the
// argument. Deafults to the default style sheet.
//
var ss = dojox.html.getStyleSheet(styleSheetName);
if(ss){
if(ss.sheet){
ss.sheet.disabled = false;
}else{
ss.disabled = false;
}
}
}
dojox.html.disableStyleSheet = function(styleSheetName){
// summary
// Disables the dynamic style sheet with the name passed in the
// argument. If no arg is passed, defaults to the default style sheet.
//
var ss = dojox.html.getStyleSheet(styleSheetName);
if(ss){
if(ss.sheet){
ss.sheet.disabled = true;
}else{
ss.disabled = true;
}
}
}
dojox.html.activeStyleSheet = function(title /* optional */){
// summary
// Getter/Setter
//
// If passed a title, enables a that style sheet. All other
// toggle-able style sheets are disabled.
//
// If no argument is passed, returns currently enabled
// style sheet.
var sheets = dojox.html.getToggledStyleSheets();
if(arguments.length == 1){
//console.log("sheets:", sheets);
dojo.forEach(sheets, function(s){
s.disabled = (s.title == title) ? false : true;
//console.log("SWITCHED:", s.title, s.disabled, s.id);
});
}else{
for(var i=0; i<sheets.length;i++){
if(sheets[i].disabled == false){
return sheets[i];
}
}
}
return true;
}
dojox.html.getPreferredStyleSheet = function(){
// summary
// Returns the style sheet that was initially enabled
// on document launch.
//TODO
}
dojox.html.getToggledStyleSheets = function(){
// summary
// Searches HTML for style sheets that are "toggle-able" -
// can be enabled and disabled. These would include sheets
// with the title attribute, as well as the REL attribute.
//
// returns:
// An array of all toggle-able style sheets
//
// TODO: Sets of style sheets could be grouped according to
// an ID and used in sets, much like different
// groups of radio buttons. It would not however be
// according to W3C spec
//
if(!titledSheets.length){
var sObjects = dojox.html.getStyleSheets();
for(var nm in sObjects){
if(sObjects[nm].title){
//console.log("TITLE:", sObjects[nm].title, sObjects[nm])
titledSheets.push(sObjects[nm]);
}
}
}
return titledSheets;
}
dojox.html.getStyleSheets = function(){
// summary
// Collects all the style sheets referenced in the HTML page,
// including any incuded via @import.
//
// returns:
// An hash map of all the style sheets.
//
// TODO: Does not recursively search for @imports, so it will
// only go one level deep.
//
if(pageStyleSheets.collected) {return pageStyleSheets;}
var sheets = dojo.doc.styleSheets;
//console.log("styleSheets:", sheets);
dojo.forEach(sheets, function(n){
var s = (n.sheet) ? n.sheet : n;
var name = s.title || s.href;
if(dojo.isIE){
// IE attaches a style sheet for VML - do not include this
if(s.cssText.indexOf("#default#VML")==-1){
if(s.href){
// linked
pageStyleSheets[name] = s;
}else if(s.imports.length){
// Imported via @import
dojo.forEach(s.imports, function(si){
pageStyleSheets[si.title || si.href] = si;
});
}else{
//embedded within page
pageStyleSheets[name] = s;
}
}
}else{
//linked or embedded
pageStyleSheets[name] = s;
pageStyleSheets[name].id = s.ownerNode.id;
dojo.forEach(s.cssRules, function(r){
if(r.href){
// imported
pageStyleSheets[r.href] = r.styleSheet;
pageStyleSheets[r.href].id = s.ownerNode.id;
}
});
}
});
//console.log("pageStyleSheets:", pageStyleSheets);
pageStyleSheets.collected = true;
return pageStyleSheets;
}
})();
