/*
 * Copyright (c) 2011 by RibbonSoft, GmbH. All rights reserved.
 * 
 * This file is part of the QCAD project.
 *
 * Licensees holding valid QCAD Professional Edition licenses 
 * may use this file in accordance with the QCAD License
 * Agreement provided with the Software.
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, 
 * INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS 
 * FOR A PARTICULAR PURPOSE.
 * 
 * See http://www.ribbonsoft.com for further details.
 */

include("../Modify.js");
include("scripts/Block/Block.js");
include("scripts/ShapeAlgorithms.js");

function Explode(guiAction) {
    Modify.call(this, guiAction);
}

Explode.prototype = new Modify();

Explode.prototype.beginEvent = function() {
    Modify.prototype.beginEvent.call(this);

    var di = this.getDocumentInterface();
    var document = this.getDocument();
    var storage = document.getStorage();
    var ids = document.querySelectedEntities();
    var i, k, e;
    var polyline, shapes, shape;

    var op = new RMixedOperation();

    for (i=0; i<ids.length; i++) {
        var id = ids[i];
        var entity = document.queryEntity(id);
        if (isNull(entity)) {
            debugger;
        }

        // these entity types are not explodable:
        if (isPointEntity(entity) ||
            isLineEntity(entity) ||
            isArcEntity(entity)) {
            continue;
        }

        var newShapes = new Array();
        var newEntities = new Array();

        // explode ellipse into polyline with arc segments:
        if (isEllipseEntity(entity)) {
            var ellipse = entity.getData().castToShape();
            polyline = ShapeAlgorithms.approximateEllipse(ellipse, 16);
            newShapes.push(polyline);
        }

        // explode polyline into line and arc segments:
        else if (isPolylineEntity(entity)) {
            polyline = entity.getData().castToShape();
            var segments = polyline.getExploded();
            if (segments.length>0) {
                for (k=0; k<segments.length; k++) {
                    shape = segments[k].data();
                    newShapes.push(shape);
                }
            }
        }

        // explode spline into polyline with line segments:
        else if (isSplineEntity(entity)) {
            var spline = entity.getData().castToShape();
            var segments = spline.getExploded();
            if (segments.length>0) {
                polyline = new RPolyline();
                polyline.appendVertex(segments[0].getStartPoint());
                for (k=0; k<segments.length; k++) {
                    polyline.appendVertex(segments[k].getEndPoint());
                }
                newShapes.push(polyline);
            }
        }

        // explode hatch into lines:
        else if (isHatchEntity(entity)) {
            var painterPath = entity.getData().getPainterPath(false);
            shapes = painterPath.getShapes();
            for (n=0; n<shapes.length; n++) {
                shape = shapes[n].data();
                newShapes.push(shape);
            }
        }

        // explode dimension into lines, solids (triangles) and a text entity:
        else if (isDimensionEntity(entity)) {
            shapes = entity.getShapes();
            for (k=0; k<shapes.length; k++) {
                newShapes.push(shapes[k].data());
            }
            var textData = entity.getData().getTextData();
            e = new RTextEntity(entity.getDocument(), textData);
            e.setSelected(true);
            e.copyAttributesFrom(entity.data());
            newEntities.push(e);
        }

        // explode leaders into lines and solids (triangles):
        else if (isLeaderEntity(entity)) {
            shapes = entity.getShapes();
            for (k=0; k<shapes.length; k++) {
                newShapes.push(shapes[k].data());
            }
        }

        // explode text entities into lines, arcs and splines:
        else if (isTextEntity(entity)) {
            var painterPaths = entity.getPainterPaths();
            for (k=0; k<painterPaths.length; k++) {
                shapes = painterPaths[k].getShapes();
                for (n=0; n<shapes.length; n++) {
                    shape = shapes[n].data();
                    if (isSplineShape(shape)) {
                        shape = ShapeAlgorithms.splineToLineOrArc(shape, 0.01);
                    }
                    if (!isNull(shape)) {
                        newShapes.push(shape);
                    }
                }
            }
        }

        // explode block reference into contained entities:
        else if (isBlockReferenceEntity(entity)) {
            var data = entity.getData();
            var subIds = document.queryBlockEntities(data.getReferencedBlockId());
            for (k=0; k<subIds.length; k++) {
                var subEntity = data.queryEntity(subIds[k]);
                if (isNull(subEntity)) {
                    continue;
                }

                var e = subEntity.clone();
                storage.setObjectId(e, RObject.INVALID_ID);
                e.setBlockId(document.getCurrentBlockId());
                e.setSelected(true);
                newEntities.push(e);
            }
        }

        // add explosion result and delete original:
        if (newShapes.length!==0 || newEntities.length!==0) {
            // add entities based on shapes that resulted from the explosion:
            for (k=0; k<newShapes.length; k++) {
                shape = newShapes[k];
                e = shapeToEntity(entity.getDocument(), shape);
                e.setSelected(true);
                e.copyAttributesFrom(entity.data());
                op.addObject(e, false);
            }

            // add entities based on entities that resulted from the explosion:
            for (k=0; k<newEntities.length; k++) {
                op.addObject(newEntities[k], false);
            }

            // delete original entity:
            op.deleteObject(entity);
        }
    }

    di.applyOperation(op);

    this.terminate();
};

Explode.init = function(basePath) {
    var action = new RGuiAction(qsTr("&Explode"), 
        RMainWindowQt.getMainWindow());
    action.setRequiresDocument(true);
    action.setRequiresSelection(true);
    action.setScriptFile(basePath + "/Explode.js");
    action.setIcon(basePath + "/Explode.svg");
    action.setDefaultShortcut(new QKeySequence("x,p"));
    action.setDefaultCommands(["explode", "xp"]);
    action.setSortOrder(4000);
    EAction.addGuiActionTo(action, Modify, true, true, true);
    EAction.addGuiActionTo(action, Block, true, true);
    var appWin = EAction.getMainWindow();
    appWin.addSelectionListener(action);
};