com.minres.scviewer.e4.application.internal.status.WaveStatusBarControl.java Source code

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Here is the source code for com.minres.scviewer.e4.application.internal.status.WaveStatusBarControl.java

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/*******************************************************************************
 * Copyright (c) 2015 MINRES Technologies GmbH and others.
 * 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:
 *     MINRES Technologies GmbH - initial API and implementation
 *******************************************************************************/
package com.minres.scviewer.e4.application.internal.status;

import javax.inject.Inject;
import javax.inject.Named;

import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.di.UIEventTopic;
import org.eclipse.e4.ui.di.UISynchronize;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.e4.ui.workbench.modeling.EModelService;
import org.eclipse.jface.action.ContributionItem;
import org.eclipse.jface.action.StatusLineManager;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;

/**
 * The Class WaveStatusBarControl.
 */
public class WaveStatusBarControl extends StatusBarControl {

    /** The Constant ZOOM_LEVEL. */
    public static final String ZOOM_LEVEL = "ZoomLevelUpdate";

    /** The Constant CURSOR_TIME. */
    public static final String CURSOR_TIME = "CursorPosUpdate";

    /** The Constant MARKER_TIME. */
    public static final String MARKER_TIME = "MarkerPosUpdate";

    /** The Constant MARKER_DIFF. */
    public static final String MARKER_DIFF = "MarlerDiffUpdate";

    /** The model service. */
    @Inject
    EModelService modelService;

    /**
     * The Class TextContributionItem.
     */
    class TextContributionItem extends ContributionItem {

        /** The label string. */
        final String labelString;

        /** The width. */
        final int width;

        /** The text. */
        CLabel label, text;

        /** The content. */
        private String content;

        /**
         * Instantiates a new text contribution item.
         *
         * @param labelString the label string
         * @param width the width
         */
        public TextContributionItem(String labelString, int width) {
            super();
            this.labelString = labelString;
            this.width = width;
            content = "";
        }

        /* (non-Javadoc)
         * @see org.eclipse.jface.action.ContributionItem#fill(org.eclipse.swt.widgets.Composite)
         */
        @Override
        public void fill(Composite parent) {
            Composite box = new Composite(parent, SWT.NONE);
            box.setLayout(new GridLayout(2, false));
            label = new CLabel(box, SWT.SHADOW_NONE);
            label.setText(labelString);
            text = new CLabel(box, SWT.SHADOW_IN);
            GridData layoutData = new GridData(SWT.DEFAULT, SWT.DEFAULT, true, false);
            layoutData.minimumWidth = width;
            text.setLayoutData(layoutData);
        }

        /* (non-Javadoc)
         * @see org.eclipse.jface.action.ContributionItem#isDynamic()
         */
        @Override
        public boolean isDynamic() {
            return true;
        }

        /**
         * Sets the text.
         *
         * @param message the new text
         */
        public void setText(String message) {
            this.content = message;
            if (text != null && !text.isDisposed())
                text.setText(content);
        }

    }

    /** The zoom contribution. */
    TextContributionItem cursorContribution, markerContribution, markerDiffContribution, zoomContribution;

    /**
     * Instantiates a new wave status bar control.
     *
     * @param sync the sync
     */
    @Inject
    public WaveStatusBarControl(UISynchronize sync) {
        super(sync);
        cursorContribution = new TextContributionItem("C:", 80);
        markerContribution = new TextContributionItem("M:", 80);
        markerDiffContribution = new TextContributionItem("C-M:", 80);
        zoomContribution = new TextContributionItem("Z:", 80);
        manager.appendToGroup(StatusLineManager.BEGIN_GROUP, cursorContribution);
        manager.appendToGroup(StatusLineManager.BEGIN_GROUP, markerContribution);
        manager.appendToGroup(StatusLineManager.BEGIN_GROUP, markerDiffContribution);
        manager.appendToGroup(StatusLineManager.BEGIN_GROUP, zoomContribution);
    }

    /**
     * Sets the selection.
     *
     * @param selection the new selection
     */
    @Inject
    public void setSelection(@Named(IServiceConstants.ACTIVE_SELECTION) @Optional IStructuredSelection selection) {
        if (manager != null && selection != null) {
            switch (selection.size()) {
            case 0:
                manager.setMessage("");
                break;
            case 1:
                manager.setMessage(selection.getFirstElement().getClass().getSimpleName() + " selected");
                break;
            default:
                manager.setMessage("" + selection.size() + " Elements");
                break;
            }
        }
    }

    /**
     * Gets the zoom event.
     *
     * @param text the text
     * @return the zoom event
     */
    @Inject
    @Optional
    public void getZoomEvent(@UIEventTopic(ZOOM_LEVEL) String text) {
        zoomContribution.setText(text);
    }

    /**
     * Gets the cursor event.
     *
     * @param text the text
     * @return the cursor event
     */
    @Inject
    @Optional
    public void getCursorEvent(@UIEventTopic(CURSOR_TIME) String text) {
        cursorContribution.setText(text);
    }

    /**
     * Gets the marker event.
     *
     * @param text the text
     * @return the marker event
     */
    @Inject
    @Optional
    public void getMarkerEvent(@UIEventTopic(MARKER_TIME) String text) {
        markerContribution.setText(text);
    }

    /**
     * Gets the diff event.
     *
     * @param text the text
     * @return the diff event
     */
    @Inject
    @Optional
    public void getDiffEvent(@UIEventTopic(MARKER_DIFF) String text) {
        markerDiffContribution.setText(text);
    }

}