As a newcomer to javascript, I've recently been tasked with maintaining an application built in Sencha ExtJS 4. One of the components I need to modify is a tooltip feature that displays information when hovering over certain elements. This tooltip appears on various views within the application, similar to a "Customer Details" section that is displayed across multiple screens. To implement this functionality, I initially added listeners to each view:
this.listeners = {
boxready: {
fn: this.onAfterRender,
scope: this
}
However, this approach led to code repetition and began to feel like a messy practice. I had to create a method for every view to handle the tooltip logic:
/**
* This method is executed after panels are rendered in order to set ToolTip listeners on
* users and workgroups.
*
* @param {Object} scope
*/
onAfterRender: function(scope) {
Ext.defer(function() {
var usElements = Ext.get(Ext.query('.usertooltip', scope.el.dom));
usElements.on({
click: function (e) {
// Tooltip logic here
}
});
var wgElements = Ext.get(Ext.query('.wgtooltip', scope.el.dom));
wgElements.on({
click : function (e) {
// Tooltip logic here
}
});
}, 1000, this);
},
I've been exploring alternative approaches, such as using a "delegator" design pattern, but I'm unsure how to implement it effectively in my scenario.
One idea I have is to create a JavaScript class with an observer method to delegate the tooltip functionality to relevant objects. However, being new to javascript and Sencha ExtJS, I've faced challenges in implementing this concept. Any guidance or assistance from experienced developers would be greatly appreciated.
Thank you for your help in advance.
Kind regards.