/* <copyright>
Copyright (c) 2012, Motorola Mobility LLC.
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* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.

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  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

* Neither the name of Motorola Mobility LLC nor the names of its
  contributors may be used to endorse or promote products derived from this
  software without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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</copyright> */

var Montage = require("montage/core/core").Montage,
    Translate3DToolBase = require("js/tools/Translate3DToolBase").Translate3DToolBase,
    drawUtils = require("js/helper-classes/3D/draw-utils").DrawUtils,
    viewUtils = require("js/helper-classes/3D/view-utils").ViewUtils,
    vecUtils = require("js/helper-classes/3D/vec-utils").VecUtils,
    snapManager = require("js/helper-classes/3D/snap-manager").SnapManager;

exports.TranslateObject3DTool = Montage.create(Translate3DToolBase, {
    _toolID: { value: "translateObject3DTool" },
    _canOperateOnStage: { value: true },

    _initializeToolHandles: {
        value: function() {
            this._inLocalMode = (this.options.selectedMode === "rotateLocally");
        }
    },

    initializeSnapping : {
        value : function(event) {
//            console.log( "initializeSnapping" );

            this._mouseDownHitRec = null;
            this._mouseUpHitRec   = null;

            snapManager.clearAvoidList();
            snapManager.clearDragPlane();

            // the translate tool does snap align to the bounds of the object only.
            // turn off snap align to the cursor.  This needs to be re-enabled in the mouse up method
            snapManager.enableSnapAlign( false );

            // snap to element and snap to grid are conditionally enabled based
            // on the snap results of the mouse down.  enable everything for the first snap
            this._snapToElements = snapManager.elementSnapEnabledAppLevel();
            this._snapToGrid = snapManager.gridSnapEnabledAppLevel();

            this._dragPlane = null;
            this._clickedOnStage = false;
            var do3DSnap = true;

            if(this._handleMode === null)
            {
                snapManager.enableElementSnap   ( true  );
                snapManager.enableGridSnap      ( true  );
            }
            else
            {
                this._delta = null;
                //if(this._handleMode === 2) {
                    this._dragPlane = viewUtils.getNormalToUnprojectedElementPlane(this._target, this._handleMode, this._inLocalMode);
                    //console.log( "dragPlane: " + this._dragPlane );
                    snapManager.setupDragPlaneFromPlane(this._dragPlane);
                    do3DSnap = false;

                    snapManager.enableElementSnap   ( false );
                    snapManager.enableGridSnap      ( false );
                //}
            }

            if(this.application.ninja.selectedElements.length) {
                var point = webkitConvertPointFromPageToNode(this.application.ninja.stage.canvas, new WebKitPoint(event.pageX, event.pageY));

                // do the snap before setting up the avoid list to allow
                // a snap on the mouse down
                var hitRec = snapManager.snap(point.x, point.y, do3DSnap);

                if(this._handleMode === 2)
                {
                    // translate z doesn't snap to element so hitRec's element will always be different
                    // from what the browser says we clicked on. So, skip this check.
                }
                else
                {
                    // Check that hitRec's element matches element that browser says we clicked on
                    // TODO - This is still not working when using a handle that is on top of an
                    // element that is not currently selected
                    var elt = this.application.ninja.stage.getElement(event, true);
                    if(elt && (elt !== hitRec.getElement()))
                    {
                        var otherSnap = snapManager.findHitRecordForElement(elt);
                        if (otherSnap)  hitRec = otherSnap;
                    }
                    if(elt === this.application.ninja.currentDocument.model.domContainer)
                    {
                        this._clickedOnStage = true;
                    }
                }

                // we don't want to snap to selected objects during the drag
                this.application.ninja.selectedElements.forEach(function(element) {
                    snapManager.addToAvoidList(element);
                });

                if (hitRec)
                {
                    // disable snap attributes
                    if (hitRec.getType() == hitRec.SNAP_TYPE_ELEMENT)
                    {
                        this._snapToElements = false;
                        this._snapToGrid = false;
                    }
                    else if (hitRec.getType() == hitRec.SNAP_TYPE_ELEMENT_CENTER)
                    {
                        snapManager.enableSnapAlign( snapManager.snapAlignEnabledAppLevel() );
                    }

                    if(this._handleMode === 2)
                        this.clickedObject = this._target;

                    // parameterize the snap point on the target
                    this._snapParam = this.parameterizeSnap( hitRec );

                    if(!this._dragPlane)
                    {
                        if( this._inLocalMode && (this.application.ninja.selectedElements.length === 1) )
                        {
                            this._dragPlane = viewUtils.getUnprojectedElementPlane(this._clickedObject);
                            snapManager.setupDragPlaneFromPlane(this._dragPlane);
                        }
                        else
                        {
                            this._dragPlane = snapManager.setupDragPlanes( hitRec, true );
                        }

                    }

                    // only do quadrant snapping if the 4 corners of the element are in the drag plane

                    var sign = MathUtils.fpSign( vecUtils.vecDot(3,this._dragPlane,[0,0,1]) + this._dragPlane[3] - 1.0);
                     this._shouldUseQuadPt = (sign === 0);

                    var wpHitRec = hitRec.convertToWorkingPlane( this._dragPlane );
                    this._mouseDownHitRec = wpHitRec;
                    this._mouseUpHitRec = null;

                    var pt = hitRec.getScreenPoint();
                    this.downPoint.x = pt[0];
                    this.downPoint.y = pt[1];

                    // TODO - need to figure out snapManager dependency by drawUtils.
                    // For now, bypassing by calling snapManager.drawLastHit();
//                  drawUtils.refreshDisplay();
                    snapManager.drawLastHit();
                }
            }
            else
            {
                this.target = null;
            }
        }
    },

    _handleToolOptionsChange: {
        value: function(event) {
            this._inLocalMode = event.detail.mode;
            this.DrawHandles();
        }
    }

});