/** * @private */Ext.define('Ext.ux.colorpick.SliderController', { extend: 'Ext.app.ViewController', alias: 'controller.colorpick-slidercontroller', // After the component is rendered boxReady: function (view) { var me = this, container = me.getDragContainer(), dragHandle = me.getDragHandle(), dd = dragHandle.dd; // configure draggable constraints dd.constrain = true; dd.constrainTo = container.getEl(); dd.initialConstrainTo = dd.constrainTo; // needed otherwise error EXTJS-13187 // event handlers dd.on('drag', me.onHandleDrag, me); }, getDragHandle: function () { return this.view.lookupReference('dragHandle'); }, getDragContainer: function () { return this.view.lookupReference('dragHandleContainer'); }, // Fires when handle is dragged; fires "handledrag" event on the slider // with parameter "percentY" 0-1, representing the handle position on the slider // relative to the height onHandleDrag: function(e) { var me = this, view = me.getView(), container = me.getDragContainer(), dragHandle = me.getDragHandle(), y = dragHandle.getY() - container.getY(), containerEl = container.getEl(), containerHeight = containerEl.getHeight(), yRatio = y/containerHeight; // Adjust y ratio for dragger always being 1 pixel from the edge on the bottom if (yRatio > 0.99) { yRatio = 1; } view.fireEvent('handledrag', yRatio); }, // Whenever we mousedown over the slider area onMouseDown: function(e) { var me = this, dragHandle = me.getDragHandle(), y = e.getY(); // position drag handle accordingly dragHandle.setY(y); me.onHandleDrag(); dragHandle.el.repaint(); // tie into the default dd mechanism dragHandle.dd.onMouseDown(e, dragHandle.dd.el); }, // Whenever we start a drag over the colormap area onDragStart: function(e) { var me = this, dragHandle = me.getDragHandle(); // tie into the default dd mechanism dragHandle.dd.onDragStart(e, dragHandle.dd.el); }, onMouseUp: function () { var dragHandle = this.getDragHandle(); dragHandle.dd.dragEnded = true; // work around DragTracker bug }});