define([
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"dojo/dom-attr", // domAttr.attr
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"dojo/_base/lang", // lang.mixin
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"../main", // export symbols to dijit
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"../hccss" // not using this module directly, but loading it sets CSS flag on <html>
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], function(domAttr, lang, dijit){
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// module:
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// dijit/_base/wai
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var exports = {
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// summary:
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// Deprecated methods for setting/getting wai roles and states.
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// New code should call setAttribute()/getAttribute() directly.
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//
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// Also loads hccss to apply dj_a11y class to root node if machine is in high-contrast mode.
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hasWaiRole: function(/*Element*/ elem, /*String?*/ role){
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// summary:
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// Determines if an element has a particular role.
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// returns:
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// True if elem has the specific role attribute and false if not.
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// For backwards compatibility if role parameter not provided,
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// returns true if has a role
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var waiRole = this.getWaiRole(elem);
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return role ? (waiRole.indexOf(role) > -1) : (waiRole.length > 0);
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},
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getWaiRole: function(/*Element*/ elem){
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// summary:
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// Gets the role for an element (which should be a wai role).
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// returns:
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// The role of elem or an empty string if elem
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// does not have a role.
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return lang.trim((domAttr.get(elem, "role") || "").replace("wairole:",""));
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},
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setWaiRole: function(/*Element*/ elem, /*String*/ role){
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// summary:
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// Sets the role on an element.
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// description:
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// Replace existing role attribute with new role.
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domAttr.set(elem, "role", role);
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},
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removeWaiRole: function(/*Element*/ elem, /*String*/ role){
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// summary:
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// Removes the specified role from an element.
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// Removes role attribute if no specific role provided (for backwards compat.)
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var roleValue = domAttr.get(elem, "role");
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if(!roleValue){ return; }
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if(role){
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var t = lang.trim((" " + roleValue + " ").replace(" " + role + " ", " "));
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domAttr.set(elem, "role", t);
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}else{
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elem.removeAttribute("role");
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}
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},
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hasWaiState: function(/*Element*/ elem, /*String*/ state){
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// summary:
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// Determines if an element has a given state.
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// description:
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// Checks for an attribute called "aria-"+state.
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// returns:
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// true if elem has a value for the given state and
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// false if it does not.
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return elem.hasAttribute ? elem.hasAttribute("aria-"+state) : !!elem.getAttribute("aria-"+state);
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},
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getWaiState: function(/*Element*/ elem, /*String*/ state){
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// summary:
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// Gets the value of a state on an element.
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// description:
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// Checks for an attribute called "aria-"+state.
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// returns:
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// The value of the requested state on elem
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// or an empty string if elem has no value for state.
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return elem.getAttribute("aria-"+state) || "";
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},
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setWaiState: function(/*Element*/ elem, /*String*/ state, /*String*/ value){
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// summary:
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// Sets a state on an element.
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// description:
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// Sets an attribute called "aria-"+state.
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elem.setAttribute("aria-"+state, value);
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},
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removeWaiState: function(/*Element*/ elem, /*String*/ state){
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// summary:
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// Removes a state from an element.
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// description:
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// Sets an attribute called "aria-"+state.
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elem.removeAttribute("aria-"+state);
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}
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};
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lang.mixin(dijit, exports);
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/*===== return exports; =====*/
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return dijit; // for back compat :-(
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});
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