AdfDhtmlPanelSplitterBasePeer_extend.js

// variables for panel splitter;
var panelSplitterWidth = {
  defaultW: null,
  currentW: null
};

// fires on mousedown on panel splitter draggable area
var panelSplitterClick = function(event) {
  var $dragPanel = $(event.Event.target).closest("td:not('.af_panelSplitter_horizontal-icon-container')");

  // set width on initial click after pageload only
  panelSplitter.defaultW = (panelSplitter.defaultW) ? panelSplitter.defaultW : $dragPanel.prev().width();
  panelSplitter.currentW = $dragPanel.prev().width();
};

// fires whenever the panel splitter is moved
var panelSplitterPropertyChange = function (event) {
  var panelObj = propertyChange(event);

  // toggle resize cursor based on sidepanel width
  $(document.getElementById(panelObj.componentId + "::d"))[(panelSplitter.currentW >= panelSplitter.defaultW) ? "removeClass" : "addClass"]("resize");
};

// domready from jQuery
$(function() {
  /**
   * extend AdfDhtmlPanelSplitterBasePeer.prototype._handleDrag
   *
   * In order to enforce a max width on the left panel, we have to check the drag distance
   * and prevent it from overextending beyond the set width of the sidePanel
   */
  (function(drag) {
    AdfDhtmlPanelSplitterBasePeer.prototype._handleDrag = function (event, xDist, yDist) {
      var slideLeft = xDist < 0;

      panelSplitter.currentW = panelSplitter.currentW + xDist; // sidebar width +/- proposed change

      // pass xDist if we can widen the panel or if sliding left
      xDist = (panelSplitter.currentW <= panelSplitter.defaultW || slideLeft) ? xDist : 0;

      // call original ADF function
      drag.call(this, event, xDist, yDist);
    };
  }(AdfDhtmlPanelSplitterBasePeer.prototype._handleDrag));
});