| 1 | define([ |
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| 2 | "dojo/dom-attr", // domAttr.attr |
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| 3 | "dojo/_base/lang", // lang.mixin |
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| 4 | "../main", // export symbols to dijit |
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| 5 | "../hccss" // not using this module directly, but loading it sets CSS flag on <html> |
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| 6 | ], function(domAttr, lang, dijit){ |
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| 7 | |
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| 8 | // module: |
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| 9 | // dijit/_base/wai |
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| 10 | |
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| 11 | var exports = { |
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| 12 | // summary: |
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| 13 | // Deprecated methods for setting/getting wai roles and states. |
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| 14 | // New code should call setAttribute()/getAttribute() directly. |
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| 15 | // |
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| 16 | // Also loads hccss to apply dj_a11y class to root node if machine is in high-contrast mode. |
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| 17 | |
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| 18 | hasWaiRole: function(/*Element*/ elem, /*String?*/ role){ |
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| 19 | // summary: |
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| 20 | // Determines if an element has a particular role. |
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| 21 | // returns: |
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| 22 | // True if elem has the specific role attribute and false if not. |
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| 23 | // For backwards compatibility if role parameter not provided, |
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| 24 | // returns true if has a role |
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| 25 | var waiRole = this.getWaiRole(elem); |
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| 26 | return role ? (waiRole.indexOf(role) > -1) : (waiRole.length > 0); |
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| 27 | }, |
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| 28 | |
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| 29 | getWaiRole: function(/*Element*/ elem){ |
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| 30 | // summary: |
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| 31 | // Gets the role for an element (which should be a wai role). |
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| 32 | // returns: |
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| 33 | // The role of elem or an empty string if elem |
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| 34 | // does not have a role. |
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| 35 | return lang.trim((domAttr.get(elem, "role") || "").replace("wairole:","")); |
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| 36 | }, |
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| 37 | |
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| 38 | setWaiRole: function(/*Element*/ elem, /*String*/ role){ |
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| 39 | // summary: |
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| 40 | // Sets the role on an element. |
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| 41 | // description: |
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| 42 | // Replace existing role attribute with new role. |
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| 43 | |
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| 44 | domAttr.set(elem, "role", role); |
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| 45 | }, |
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| 46 | |
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| 47 | removeWaiRole: function(/*Element*/ elem, /*String*/ role){ |
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| 48 | // summary: |
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| 49 | // Removes the specified role from an element. |
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| 50 | // Removes role attribute if no specific role provided (for backwards compat.) |
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| 51 | |
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| 52 | var roleValue = domAttr.get(elem, "role"); |
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| 53 | if(!roleValue){ return; } |
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| 54 | if(role){ |
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| 55 | var t = lang.trim((" " + roleValue + " ").replace(" " + role + " ", " ")); |
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| 56 | domAttr.set(elem, "role", t); |
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| 57 | }else{ |
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| 58 | elem.removeAttribute("role"); |
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| 59 | } |
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| 60 | }, |
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| 61 | |
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| 62 | hasWaiState: function(/*Element*/ elem, /*String*/ state){ |
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| 63 | // summary: |
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| 64 | // Determines if an element has a given state. |
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| 65 | // description: |
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| 66 | // Checks for an attribute called "aria-"+state. |
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| 67 | // returns: |
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| 68 | // true if elem has a value for the given state and |
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| 69 | // false if it does not. |
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| 70 | |
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| 71 | return elem.hasAttribute ? elem.hasAttribute("aria-"+state) : !!elem.getAttribute("aria-"+state); |
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| 72 | }, |
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| 73 | |
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| 74 | getWaiState: function(/*Element*/ elem, /*String*/ state){ |
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| 75 | // summary: |
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| 76 | // Gets the value of a state on an element. |
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| 77 | // description: |
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| 78 | // Checks for an attribute called "aria-"+state. |
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| 79 | // returns: |
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| 80 | // The value of the requested state on elem |
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| 81 | // or an empty string if elem has no value for state. |
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| 82 | |
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| 83 | return elem.getAttribute("aria-"+state) || ""; |
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| 84 | }, |
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| 85 | |
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| 86 | setWaiState: function(/*Element*/ elem, /*String*/ state, /*String*/ value){ |
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| 87 | // summary: |
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| 88 | // Sets a state on an element. |
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| 89 | // description: |
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| 90 | // Sets an attribute called "aria-"+state. |
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| 91 | |
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| 92 | elem.setAttribute("aria-"+state, value); |
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| 93 | }, |
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| 94 | |
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| 95 | removeWaiState: function(/*Element*/ elem, /*String*/ state){ |
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| 96 | // summary: |
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| 97 | // Removes a state from an element. |
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| 98 | // description: |
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| 99 | // Sets an attribute called "aria-"+state. |
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| 100 | |
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| 101 | elem.removeAttribute("aria-"+state); |
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| 102 | } |
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| 103 | }; |
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| 104 | |
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| 105 | lang.mixin(dijit, exports); |
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| 106 | |
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| 107 | /*===== return exports; =====*/ |
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| 108 | return dijit; // for back compat :-( |
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| 109 | }); |
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