[TIMOB-18499] TiAPI: Ti.UI.ATTRIBUTE_LINK needs to support click events

   var win = Ti.UI.createWindow({
       backgroundColor: '#ddd',
       fullscreen:true,
       layout:'vertical'
   });
    
   var text =  'Tap on any of the following:\n1.Appcelerator Titanium \t2.Android \t3.IOS';
     
   var attr = Ti.UI.createAttributedString({
       text: text,
       attributes: [
           {
               type: Ti.UI.ATTRIBUTE_LINK,
               value: 'http://www.appcelerator.com/developers/',
               range: [text.indexOf('Appcelerator Titanium'), ('Appcelerator Titanium').length]
           },
           {
               type: Ti.UI.ATTRIBUTE_FONT,
               value: {textStyle:Ti.UI.TEXT_STYLE_HEADLINE},
               range: [text.indexOf('Appcelerator'), ('Appcelerator').length]
           },
           {
               type: Ti.UI.ATTRIBUTE_FONT,
               value: {textStyle:Ti.UI.TEXT_STYLE_SUBHEADLINE},
               range: [text.indexOf('Titanium'), ('Titanium').length]
           },
           {
               type: Ti.UI.ATTRIBUTE_LINK,
               value: 'http://developer.android.com/',
               range: [text.indexOf('Android'), ('Android').length]
           },
           {
               type: Ti.UI.ATTRIBUTE_FONT,
               value: {textStyle:Ti.UI.TEXT_STYLE_CAPTION1},
               range: [text.indexOf('Android'), ('Android').length]
           },
           {
               type: Ti.UI.ATTRIBUTE_LINK,
               value: 'https://developer.apple.com/',
               range: [text.indexOf('IOS'), ('IOS').length]
           },
           {
               type: Ti.UI.ATTRIBUTE_FONT,
               value: {textStyle:Ti.UI.TEXT_STYLE_CAPTION1},
               range: [text.indexOf('IOS'), ('IOS').length]
           },
       ]
   });
    
   var label = Ti.UI.createLabel({
       backgroundColor: '#ccc',
       attributedString: attr,
   });
    
   label.addEventListener('link',function(e){
       alert(e.url);
   })
    
    
    
    
   var container1 = Ti.UI.createView({width:Ti.UI.SIZE,height:Ti.UI.SIZE,layout:'horizontal'});
   var b11 = Ti.UI.createButton({title:' W 200 '});
   var b12 = Ti.UI.createButton({title:' W 300 '});
   var b13 = Ti.UI.createButton({title:' W SIZE '});
   container1.add(b11);
   container1.add(b12);
   container1.add(b13);
    
   var container2 = Ti.UI.createView({width:Ti.UI.SIZE,height:Ti.UI.SIZE,layout:'horizontal'});
   var b21 = Ti.UI.createButton({title:' H 200 '});
   var b22 = Ti.UI.createButton({title:' H 300 '});
   var b23 = Ti.UI.createButton({title:' H SIZE '});
   container2.add(b21);
   container2.add(b22);
   container2.add(b23);
    
   var container3 = Ti.UI.createView({width:Ti.UI.SIZE,height:Ti.UI.SIZE,layout:'horizontal'});
   var b31 = Ti.UI.createButton({title:' Vert C '});
   var b32 = Ti.UI.createButton({title:' Vert T '});
   var b33 = Ti.UI.createButton({title:' Vert B '});
   container3.add(b31);
   container3.add(b32);
   container3.add(b33);
    
   var container4 = Ti.UI.createView({width:Ti.UI.SIZE,height:Ti.UI.SIZE,layout:'horizontal'});
   var b41 = Ti.UI.createButton({title:' Hor L '});
   var b42 = Ti.UI.createButton({title:' Hor C '});
   var b43 = Ti.UI.createButton({title:' Hor R '});
   container4.add(b41);
   container4.add(b42);
   container4.add(b43);
    
   //vertical = {center:0,top:1,bottom:2}
   //horizontal = {left:0,center:1,right:2}
    
    
   function clickHandler(e){
       if (e.source == b11) {
           label.width = 200;
       }    
       if (e.source == b12) {
           label.width = 300;
       }    
       if (e.source == b13) {
           label.width = Ti.UI.SIZE;
       }    
       if (e.source == b21) {
           label.height = 200;
       }    
       if (e.source == b22) {
           label.height = 300;
       }    
       if (e.source == b23) {
           label.height = Ti.UI.SIZE;
       }    
       if (e.source == b31) {
           label.verticalAlign = 0;
       }    
       if (e.source == b32) {
           label.verticalAlign = 1;
       }    
       if (e.source == b33) {
           label.verticalAlign = 2;
       }    
       if (e.source == b41) {
           label.textAlign = 0;
       }    
       if (e.source == b42) {
           label.textAlign = 1;
       }    
       if (e.source == b43) {
           label.textAlign = 2;
       }    
   }
    
   win.addEventListener('click',clickHandler);
    
    
   win.add(label);
   win.add(container1);
   win.add(container2);
   win.add(container3);
   win.add(container4);
    
   win.open();