AbstractPresentationRenderer.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * 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:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.ui.smartTree.presentation;

import com.google.gwt.dom.client.DivElement;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.ImageElement;
import com.google.gwt.dom.client.Style;

import org.eclipse.che.ide.api.data.tree.Node;
import org.eclipse.che.ide.ui.smartTree.Tree.Joint;
import org.eclipse.che.ide.ui.smartTree.TreeStyles;
import org.eclipse.che.ide.ui.smartTree.TreeView;
import org.vectomatic.dom.svg.OMSVGSVGElement;
import org.vectomatic.dom.svg.ui.SVGResource;
import org.vectomatic.dom.svg.utils.OMSVGParser;

/**
 * Base class for providing own rendering mechanism.
 *
 * @author Vlad Zhukovskiy
 */
public abstract class AbstractPresentationRenderer<N extends Node> implements PresentationRenderer<N> {

    protected TreeStyles treeStyles;

    public AbstractPresentationRenderer(TreeStyles treeStyles) {
        this.treeStyles = treeStyles;
    }

    /** {@inheritDoc} */
    @Override
    public Element getRootContainer(String domID) {
        DivElement divElement = Document.get().createDivElement();
        divElement.setId(domID);
        divElement.setClassName(treeStyles.styles().rootContainer());
        return divElement;
    }

    /** {@inheritDoc} */
    @Override
    public Element getNodeContainer() {
        DivElement divElement = Document.get().createDivElement();
        divElement.setClassName(treeStyles.styles().nodeContainer());
        return divElement;
    }

    /** {@inheritDoc} */
    @Override
    public Element getJointContainer(Joint joint) {
        Element jointElement;

        switch (joint) {
            case COLLAPSED:
                OMSVGSVGElement svg = treeStyles.iconCollapsed().getSvg();
                svg.addClassNameBaseVal(treeStyles.styles().jointContainer());
                svg.setWidth(Style.Unit.PX, 16.f);
                svg.setHeight(Style.Unit.PX, 16.f);
                jointElement = svg.getElement();
                break;
            case EXPANDED:
                OMSVGSVGElement svg1 = treeStyles.iconExpanded().getSvg();
                svg1.addClassNameBaseVal(treeStyles.styles().jointContainer());
                svg1.setWidth(Style.Unit.PX, 16.f);
                svg1.setHeight(Style.Unit.PX, 16.f);
                jointElement = svg1.getElement();
                break;
            default:
                OMSVGSVGElement svgsvgElement = OMSVGParser.currentDocument().createSVGSVGElement();
                svgsvgElement.addClassNameBaseVal(treeStyles.styles().jointContainer());
                svgsvgElement.setWidth(Style.Unit.PX, 16.f);
                svgsvgElement.setHeight(Style.Unit.PX, 16.f);
                jointElement = svgsvgElement.getElement();
        }

        DivElement wrapper = Document.get().createDivElement();
        wrapper.appendChild(jointElement);
        return jointElement;
    }

    /** {@inheritDoc} */
    @Override
    public Element getUserElement(Element userElement) {
        return userElement;
    }

    /** {@inheritDoc} */
    @Override
    public Element getIconContainer(SVGResource icon) {
        if (icon != null) {
            OMSVGSVGElement svg = icon.getSvg();
            svg.addClassNameBaseVal(treeStyles.styles().iconContainer());
            svg.setWidth(Style.Unit.PX, 16);
            svg.setHeight(Style.Unit.PX, 16);
            return svg.getElement();
        }

        ImageElement emptyIcon = Document.get().createImageElement();
        emptyIcon.setSrc(TreeView.blankImageUrl);
        emptyIcon.setClassName(treeStyles.styles().iconContainer());
        return emptyIcon;
    }

    /** {@inheritDoc} */
    @Override
    public Element getPresentableTextContainer(Element content) {
        DivElement divElement = Document.get().createDivElement();
        divElement.setClassName(treeStyles.styles().presentableTextContainer());
        divElement.appendChild(content);
        return divElement;
    }

    /** {@inheritDoc} */
    @Override
    public Element getInfoTextContainer(Element content) {
        DivElement divElement = Document.get().createDivElement();
        divElement.setClassName(treeStyles.styles().infoTextContainer());
        divElement.appendChild(content);
        return divElement;
    }

    /** {@inheritDoc} */
    @Override
    public Element getDescendantsContainer() {
        DivElement divElement = Document.get().createDivElement();
        divElement.setClassName(treeStyles.styles().descendantsContainer());
        return divElement;
    }
}