/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2005, 2013 SAP AG.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    SAP AG - initial API, implementation and documentation
 *    mwenz - Bug 342869 - Image doesn't scale the contained SWT Image on resize
 *    mwenz - Bug 358255 - Add Border/Background decorators
 *    Benjamin Schmeling - mwenz - Bug 367483 - Support composite connections
 *    cbrand - Bug 378341 - Enlargement of the Line Width of Shapes isn't calculated based on the center.
 *    mwenz - Bug 396793 - Text decorators
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.graphiti.testtool.sketch;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.graphiti.dt.IDiagramTypeProvider;
import org.eclipse.graphiti.features.IAddFeature;
import org.eclipse.graphiti.features.ICopyFeature;
import org.eclipse.graphiti.features.ICreateConnectionFeature;
import org.eclipse.graphiti.features.ICreateFeature;
import org.eclipse.graphiti.features.IDeleteFeature;
import org.eclipse.graphiti.features.IDirectEditingFeature;
import org.eclipse.graphiti.features.ILayoutFeature;
import org.eclipse.graphiti.features.IMoveShapeFeature;
import org.eclipse.graphiti.features.IPasteFeature;
import org.eclipse.graphiti.features.IReconnectionFeature;
import org.eclipse.graphiti.features.IResizeShapeFeature;
import org.eclipse.graphiti.features.context.IAddContext;
import org.eclipse.graphiti.features.context.ICopyContext;
import org.eclipse.graphiti.features.context.ICustomContext;
import org.eclipse.graphiti.features.context.IDeleteContext;
import org.eclipse.graphiti.features.context.IDirectEditingContext;
import org.eclipse.graphiti.features.context.ILayoutContext;
import org.eclipse.graphiti.features.context.IMoveShapeContext;
import org.eclipse.graphiti.features.context.IPasteContext;
import org.eclipse.graphiti.features.context.IReconnectionContext;
import org.eclipse.graphiti.features.context.IResizeShapeContext;
import org.eclipse.graphiti.features.custom.ICustomFeature;
import org.eclipse.graphiti.mm.algorithms.AbstractText;
import org.eclipse.graphiti.mm.algorithms.Ellipse;
import org.eclipse.graphiti.mm.algorithms.GraphicsAlgorithm;
import org.eclipse.graphiti.mm.algorithms.Image;
import org.eclipse.graphiti.mm.algorithms.MultiText;
import org.eclipse.graphiti.mm.algorithms.Polygon;
import org.eclipse.graphiti.mm.algorithms.Polyline;
import org.eclipse.graphiti.mm.algorithms.Rectangle;
import org.eclipse.graphiti.mm.algorithms.RoundedRectangle;
import org.eclipse.graphiti.mm.algorithms.styles.LineStyle;
import org.eclipse.graphiti.mm.algorithms.styles.Orientation;
import org.eclipse.graphiti.mm.algorithms.styles.Style;
import org.eclipse.graphiti.mm.pictograms.ConnectionDecorator;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
import org.eclipse.graphiti.mm.pictograms.Diagram;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.mm.pictograms.Shape;
import org.eclipse.graphiti.testtool.sketch.features.AddAnythingFeature;
import org.eclipse.graphiti.testtool.sketch.features.AddDiagramFeature;
import org.eclipse.graphiti.testtool.sketch.features.AddLinkFeature;
import org.eclipse.graphiti.testtool.sketch.features.BackgroundColorFeature;
import org.eclipse.graphiti.testtool.sketch.features.ChangeAlignmentFeature;
import org.eclipse.graphiti.testtool.sketch.features.ClearDecoratorsFeature;
import org.eclipse.graphiti.testtool.sketch.features.CornerDimensionFeature;
import org.eclipse.graphiti.testtool.sketch.features.DisplayDecoratorFeature;
import org.eclipse.graphiti.testtool.sketch.features.FontColorFeature;
import org.eclipse.graphiti.testtool.sketch.features.ForegroundColorFeature;
import org.eclipse.graphiti.testtool.sketch.features.GradientColorFeature;
import org.eclipse.graphiti.testtool.sketch.features.LayoutContainerShapeGhostAndInnerShapeFeature;
import org.eclipse.graphiti.testtool.sketch.features.LineStyleFeature;
import org.eclipse.graphiti.testtool.sketch.features.LineWidthFeature;
import org.eclipse.graphiti.testtool.sketch.features.ModifyControlPointsFeature;
import org.eclipse.graphiti.testtool.sketch.features.SendToBackFeature;
import org.eclipse.graphiti.testtool.sketch.features.SendToFrontFeature;
import org.eclipse.graphiti.testtool.sketch.features.SetImageAttributesFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchDeleteFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchFontFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchGhostLayoutFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchLabelDirectEditingFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchLayoutFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchMoveShapeFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchReconnectionFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchResizeShapeFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchTextDirectEditingFeature;
import org.eclipse.graphiti.testtool.sketch.features.SketchTextProposalDirectEditingFeature;
import org.eclipse.graphiti.testtool.sketch.features.SwitchModeFeature;
import org.eclipse.graphiti.testtool.sketch.features.ToggleDecorator;
import org.eclipse.graphiti.testtool.sketch.features.TransparencyFeature;
import org.eclipse.graphiti.testtool.sketch.features.bd.CreateChannelFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.CreateCsGhostAndInnerShapeFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.CreateHumanFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateCanFigureFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateCompositeConnectionFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateCurvedConnectionFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateFreeformConnectionFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateGaContainerFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateGaContainerFeatureWithGhost;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateGaShapeFeature;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateGaShapeFeatureWithGhost;
import org.eclipse.graphiti.testtool.sketch.features.create.SketchCreateManhattanConnectionFeature;
import org.eclipse.graphiti.testtool.sketch.features.pool.CreateLaneFeauture;
import org.eclipse.graphiti.testtool.sketch.features.pool.CreatePoolFeature;
import org.eclipse.graphiti.testtool.sketch.features.pool.LayoutPoolFeature;
import org.eclipse.graphiti.testtool.sketch.features.style.CreateDefaultStylesFeature;
import org.eclipse.graphiti.testtool.sketch.features.style.IgnoreAllFeature;
import org.eclipse.graphiti.testtool.sketch.features.style.MakeStyleFeature;
import org.eclipse.graphiti.testtool.sketch.features.style.SetStyleFeature;
import org.eclipse.graphiti.testtool.sketch.features.style.UnsetStyleFeature;
import org.eclipse.graphiti.ui.features.DefaultFeatureProvider;

/**
 * The Class SketchFeatureProvider.
 */
public class SketchFeatureProvider extends DefaultFeatureProvider {

	public static final String CF_RECTANGLE_MULTI_TEXT = "Rectangle";

	public static final String CF_RECTANGLE_SINGLE_TEXT = "Rectangle Single Text";

	private static final String NO_MOVE = "no move";

	private static final boolean TEST_RESIZE_SHAPE_FEATURE = false;

	private final int TRANSPARENCY_STEP_SIZE = 5;

	private final int LINE_WIDTH_STEP_SIZE = 1;

	private boolean testMode = false; // if true, then this feature provider is
										// used in the test suite

	private final Dimension CORNER_DIMENSION[] = new Dimension[] { new Dimension(0, 0), new Dimension(4, 4), new Dimension(8, 8),
			new Dimension(20, 20), new Dimension(21, 21), new Dimension(100, 100), new Dimension(101, 101), new Dimension(200, 200),
			new Dimension(100, 20), new Dimension(20, 100), };

	/**
	 * Instantiates a new sketch feature provider.
	 * 
	 * @param dtp
	 *            the dtp
	 */
	public SketchFeatureProvider(IDiagramTypeProvider dtp) {
		super(dtp);
	}

	@Override
	public ICreateFeature[] getCreateFeatures() {

		List<ICreateFeature> features = new ArrayList<ICreateFeature>();

		features.add(new CreateCsGhostAndInnerShapeFeature(this, "CS + Ghost + inner Shape", "create CS with Ghost and inner Shape"));

		features.add(createCreateGaContainerFeature("Rectangle Container", "draw rectangle", Rectangle.class));
		features.add(createCreateGaContainerFeature("Rounded Rectangle Container", "draw rounded rectangle", RoundedRectangle.class));
		features.add(createCreateGaContainerFeature("Ellipse Container", "draw ellipse", Ellipse.class));
		features.add(createCreateGaContainerFeature("Triangle Container", "draw triangle", Polygon.class));

		features.add(createCreateGaShapeFeature(CF_RECTANGLE_MULTI_TEXT, "draw rectangle", Rectangle.class));
		features.add(createCreateGaShapeFeatureSingleText(CF_RECTANGLE_SINGLE_TEXT, "draw rectangle with a single line text",
				Rectangle.class));
		features.add(createCreateGaShapeFeature("Rounded Rectangle", "draw rounded rectangle", RoundedRectangle.class));
		features.add(createCreateGaShapeFeature("Ellipse", "draw ellipse", Ellipse.class));
		features.add(createCreateGaShapeFeature("Triangle", "draw triangle", Polygon.class));
		features.add(createCreateGaShapeFeature("Arrow", "draw Arrow outline", Polygon.class));
		features.add(createCreateGaShapeFeature("Line", "draw line", Polyline.class));
		features.add(createCreateGaShapeFeature("Image", "draw image", Image.class));

		features.add(createCreateGaShapeFeatureWithGhost("Rectangle Ghost", "rectangle with ghost", Rectangle.class));
		features.add(createCreateGaShapeFeatureWithGhost("Rounded Rectangle Ghost", "rounded rectangle with ghost", RoundedRectangle.class));
		features.add(createCreateGaShapeFeatureWithGhost("Ellipse Ghost", "ellipse with ghost", Ellipse.class));

		features.add(createCreateGaContainerFeatureWithGhost("Rectangle Container Ghost", "rectangle container with ghost", Rectangle.class));
		features.add(createCreateGaContainerFeatureWithGhost("Rounded Container Rectangle Ghost", "rounded rectangle container with ghost",
				RoundedRectangle.class));
		features.add(createCreateGaContainerFeatureWithGhost("Ellipse Container Ghost", "ellipse container with ghost", Ellipse.class));

		features.add(new CreatePoolFeature(this, "Pool", "create a pool"));

		features.add(new SketchCreateCanFigureFeature(this, "Can figure", "example for a platform ga"));

		features.add(new CreateHumanFeature(this, "Human", "create ghost with human"));

		return features.toArray(new ICreateFeature[0]);
	}

	@Override
	public ICustomFeature[] getCustomFeatures(ICustomContext context) {

		List<ICustomFeature> retList = new ArrayList<ICustomFeature>();

		boolean isCp = SketchUtil.isConnectionPoint(context.getPictogramElements()[0]);
		if (isCp) {
			return retList.toArray(new ICustomFeature[0]);
		}
		
		for (int i = 0; i <= 10; i += LINE_WIDTH_STEP_SIZE) {
			retList.add(new LineWidthFeature(this, i));
		}

		retList.add(new LineStyleFeature(this, LineStyle.SOLID));
		retList.add(new LineStyleFeature(this, LineStyle.DASH));
		retList.add(new LineStyleFeature(this, LineStyle.DASHDOT));
		retList.add(new LineStyleFeature(this, LineStyle.DASHDOTDOT));
		retList.add(new LineStyleFeature(this, LineStyle.DOT));

		for (int i = 0; i < CORNER_DIMENSION.length; i++) {
			retList.add(new CornerDimensionFeature(this, CORNER_DIMENSION[i]));
		}

		retList.add(new SendToFrontFeature(this));
		retList.add(new SendToBackFeature(this));

		retList.add(new ForegroundColorFeature(this));
		retList.add(new BackgroundColorFeature(this));
		retList.add(new GradientColorFeature(this));
		retList.add(new FontColorFeature(this));

		retList.add(new SketchFontFeature(this));

		retList.add(new CreateLaneFeauture(this));

		retList.add(new ChangeAlignmentFeature(this, "Left", Orientation.ALIGNMENT_LEFT, null));
		retList.add(new ChangeAlignmentFeature(this, "Center", Orientation.ALIGNMENT_CENTER, null));
		retList.add(new ChangeAlignmentFeature(this, "Right", Orientation.ALIGNMENT_RIGHT, null));

		retList.add(new ChangeAlignmentFeature(this, "Top", null, Orientation.ALIGNMENT_TOP));
		retList.add(new ChangeAlignmentFeature(this, "Middle", null, Orientation.ALIGNMENT_CENTER));
		retList.add(new ChangeAlignmentFeature(this, "Bottom", null, Orientation.ALIGNMENT_BOTTOM));

		retList.add(new ChangeAlignmentFeature(this, "Top Left", Orientation.ALIGNMENT_LEFT, Orientation.ALIGNMENT_TOP));
		retList.add(new ChangeAlignmentFeature(this, "Top Right", Orientation.ALIGNMENT_RIGHT, Orientation.ALIGNMENT_TOP));
		retList.add(new ChangeAlignmentFeature(this, "Middle Center", Orientation.ALIGNMENT_CENTER, Orientation.ALIGNMENT_CENTER));
		retList.add(new ChangeAlignmentFeature(this, "Bottom Left", Orientation.ALIGNMENT_LEFT, Orientation.ALIGNMENT_BOTTOM));
		retList.add(new ChangeAlignmentFeature(this, "Bottom Right", Orientation.ALIGNMENT_RIGHT, Orientation.ALIGNMENT_BOTTOM));

		for (int i = 0; i < 100; i += TRANSPARENCY_STEP_SIZE) {
			retList.add(new TransparencyFeature(this, i));
		}
		retList.add(new TransparencyFeature(this, 100));

		retList.add(new ToggleDecorator(this));

		retList.add(new CreateDefaultStylesFeature(this));

		retList.add(new MakeStyleFeature(this));

		Collection<Style> styles = getDiagramTypeProvider().getDiagram().getStyles();
		for (Style style : styles) {
			createSetStyleFeatures(style, retList);
		}

		retList.add(new UnsetStyleFeature(this));

		retList.add(new IgnoreAllFeature(this));

		retList.add(new SwitchModeFeature(this));

		retList.add(new ModifyControlPointsFeature(this));

		retList.add(new SetImageAttributesFeature(this, context,
				SetImageAttributesFeature.ATTRIBUTE_STRETCH_HORIZONTALLY));
		retList.add(new SetImageAttributesFeature(this, context, SetImageAttributesFeature.ATTRIBUTE_STRETCH_VERTICALLY));
		retList.add(new SetImageAttributesFeature(this, context, SetImageAttributesFeature.ATTRIBUTE_PROPORTIONAL));

		retList.add(new DisplayDecoratorFeature(this, context, DisplayDecoratorFeature.TYPE_IMAGE));
		retList.add(new DisplayDecoratorFeature(this, context, DisplayDecoratorFeature.TYPE_BORDER));
		retList.add(new DisplayDecoratorFeature(this, context, DisplayDecoratorFeature.TYPE_COLOR));
		retList.add(new DisplayDecoratorFeature(this, context, DisplayDecoratorFeature.TYPE_TEXT));
		retList.add(new ClearDecoratorsFeature(this, context));

		return retList.toArray(new ICustomFeature[0]);
	}

	private void createSetStyleFeatures(Style parentStyle, List<ICustomFeature> retList) {
		retList.add(new SetStyleFeature(parentStyle, this));
		Collection<Style> styles = parentStyle.getStyles();
		for (Style style : styles) {
			createSetStyleFeatures(style, retList);
		}
	}

	@Override
	public ICreateConnectionFeature[] getCreateConnectionFeatures() {
		List<ICreateConnectionFeature> retList = new ArrayList<ICreateConnectionFeature>();

		retList.add(new SketchCreateFreeformConnectionFeature(this, "free", "freeform connection"));
		retList.add(new SketchCreateManhattanConnectionFeature(this, "manhattan", "manhattan connection"));
		retList.add(new SketchCreateCurvedConnectionFeature(this, "curved", "curved connection"));
		retList.add(new SketchCreateCompositeConnectionFeature(this, "composite", "composite connection"));
		retList.add(new CreateChannelFeature(this, "channel", "channel connection"));

		return retList.toArray(new ICreateConnectionFeature[0]);
	}

	private ICreateFeature createCreateGaContainerFeature(String name, String description, Class<? extends GraphicsAlgorithm> gaType) {
		ICreateFeature createFeature = new SketchCreateGaContainerFeature(this, name, description, gaType);
		return createFeature;
	}

	private ICreateFeature createCreateGaShapeFeature(String name, String description, Class<? extends GraphicsAlgorithm> gaType) {
		ICreateFeature createFeature = new SketchCreateGaShapeFeature(this, name, description, gaType);
		return createFeature;
	}

	private ICreateFeature createCreateGaShapeFeatureSingleText(String name, String description, Class<? extends GraphicsAlgorithm> gaType) {
		ICreateFeature createFeature = new SketchCreateGaShapeFeature(this, name, description, gaType, false);
		return createFeature;
	}

	private ICreateFeature createCreateGaShapeFeatureWithGhost(String name, String description, Class<? extends GraphicsAlgorithm> gaType) {
		// breaks the build: ICreateFeature createFeature = new
		// SketchCreateGaShapeFeatureWithGhost(this, name, description,
		// gaType);
		ICreateFeature createFeature = new SketchCreateGaShapeFeatureWithGhost(this, name, description, gaType);
		return createFeature;
	}

	private ICreateFeature createCreateGaContainerFeatureWithGhost(String name, String description,
			Class<? extends GraphicsAlgorithm> gaType) {
		// breaks the build: ICreateFeature createFeature = new
		// SketchCreateGaShapeFeatureWithGhost(this, name, description,
		// gaType);
		ICreateFeature createFeature = new SketchCreateGaContainerFeatureWithGhost(this, name, description, gaType);
		return createFeature;
	}

	@Override
	public IMoveShapeFeature getMoveShapeFeature(IMoveShapeContext context) {
		Shape shape = context.getShape();
		if (shape != null) {
			GraphicsAlgorithm ga = shape.getGraphicsAlgorithm();
			if (checkNoMove(ga)) {
				return null;
			}
		}
		return new SketchMoveShapeFeature(this);
	}

	private boolean checkNoMove(GraphicsAlgorithm ga) {
		if (ga instanceof AbstractText) {
			AbstractText at = (AbstractText) ga;
			if (NO_MOVE.equalsIgnoreCase(at.getValue())) {
				return true;
			}
		} else {
			List<GraphicsAlgorithm> gaChildren = ga.getGraphicsAlgorithmChildren();
			for (GraphicsAlgorithm child : gaChildren) {
				if (checkNoMove(child)) {
					return true;
				}
			}
		}
		return false;
	}

	@Override
	public IAddFeature getAddFeature(IAddContext context) {
		IAddFeature ret = super.getAddFeature(context);

		Object newObject = context.getNewObject();
		if (newObject instanceof Diagram) {
			ret = new AddDiagramFeature(this);
		} else if (!(context.getTargetContainer() instanceof Diagram) && !(newObject instanceof PictogramElement)) {
			// works only container shapes, because drop is only allowed on
			// container shapes
			ret = new AddLinkFeature(this);
		} else {
			return new AddAnythingFeature(this);
		}

		return ret;
	}

	@Override
	public ILayoutFeature getLayoutFeature(ILayoutContext context) {
		PictogramElement pe = context.getPictogramElement();
		if (SketchUtil.getLabelGa(pe) != null) {
			return new SketchLayoutFeature(this);
		} else if (SketchUtil.getGhostGa(pe) != null) {
			return new SketchGhostLayoutFeature(this);
		} else if (SketchUtil.isPoolPe(pe)) {
			return new LayoutPoolFeature(this);
		} else {
			boolean check = context.getPictogramElement() instanceof ContainerShape;
			if (check) {
				ContainerShape cs = (ContainerShape) pe;
				List<Shape> children = cs.getChildren();
				if (!children.isEmpty()) {
					Shape firstChild = children.get(0);
					if (firstChild != null) {
						GraphicsAlgorithm ga = firstChild.getGraphicsAlgorithm();
						check = check && ga instanceof Ellipse;
						if (check) {
							return new LayoutContainerShapeGhostAndInnerShapeFeature(this);
						}
					}
				}
			}
		}
		return super.getLayoutFeature(context);
	}

	@Override
	public IDirectEditingFeature getDirectEditingFeature(IDirectEditingContext context) {
		IDirectEditingFeature ret = null;
		PictogramElement pe = context.getPictogramElement();
		AbstractText labelGa = SketchUtil.getLabelGa(pe);
		if (labelGa != null) {
			if (labelGa instanceof MultiText) {
				ret = new SketchLabelDirectEditingFeature(this);
			} else {
				if (labelGa.getValue().startsWith("p")) { //$NON-NLS-1$
					ret = new SketchTextProposalDirectEditingFeature(this);
				} else {
					ret = new SketchTextDirectEditingFeature(this);
				}
			}
		}

		return ret;
	}

	@Override
	public IResizeShapeFeature getResizeShapeFeature(IResizeShapeContext context) {
		final PictogramElement pe = context.getPictogramElement();
		if (SketchUtil.isConnectionPoint(pe)) {
			return null;
		}
		if (pe instanceof ConnectionDecorator) {
			return null;
		}
		if (pe.getGraphicsAlgorithm() instanceof Polyline) {
			return null;
		}

		if (TEST_RESIZE_SHAPE_FEATURE) {
			return new SketchResizeShapeFeature(this);
		} else {
			return super.getResizeShapeFeature(context);
		}
	}

	@Override
	public ICopyFeature getCopyFeature(ICopyContext context) {
		// return new DefaultCopyFeature(this);
		return null;
	}

	@Override
	public IPasteFeature getPasteFeature(IPasteContext context) {
		// return new DefaultPasteFeature(this);
		return null;
	}

	@Override
	public IDeleteFeature getDeleteFeature(IDeleteContext context) {
		IDeleteFeature ret = null;
		ret = new SketchDeleteFeature(this);
		return ret;
	}

	public void setTestMode(boolean testMode) {
		this.testMode = testMode;
	}

	public boolean isTestMode() {
		return testMode;
	}

	@Override
	public IReconnectionFeature getReconnectionFeature(IReconnectionContext context) {
		return new SketchReconnectionFeature(this);
	}
}