grabetha

What

Grabetha is a fairly raw grab and drop library to help solve the grabbing and dropping of UI's that are based on data.

That said, a UI does not need to be data-driven for grabetha to work.

Usage:

npm install grabetha.

Require grabetha:

var grabetha = require('grabetha');

Create a grabbable set:

grabetha.grabbable(element or selector)

var grabbableStuff = grabetha.grabbable('.things .stuff');

Assign handlers to the set:

grabbableStuff.on('grab', function(grab){
    // 'grab' gets raised once when a grabbable item is grabbed.

    // you can put stuff on the grabbableStuff object that is passed in,
    // as it lives throughout the lifecycle of the interaction.
    // the grabbableStuff object is also passed to any droppable instances
    // that it is hovered over or dropped onto.

    // Use the ghost helper to easily create
    // a ghost version of the thing you are grabbing.
    this.ghost = this.createGhost();

    // Listen to move events
    grab.on('move', function(){
        // a 'move' is raised every mousemove or touchmove

        //Do something
    });
})
// Listen to the drop
.on('drop', function(position){
    // a drop is raised on mouseup or touchend

    // Cleanup the ghost.
    this.ghost.destroy();
    this.ghost = null
});

Create a droppable set:

grabetha.droppable(element or selector)

var dropArea = grabetha.droppable('.majigger');

Assign handlers

dropArea.on('hover', function(event){
    // the droppable element it is over
    event.taget;

    // the grabbale instance that is over it.
    event.grabbable;

    // the location of the grab
    event.position;
})
.on('drop', function(event){
    // the same stuff as above is accessable here.
    console.log(event);
});