155 lines
5.5 KiB
Java
155 lines
5.5 KiB
Java
package com.minres.scviewer.e4.application.parts.help;
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import java.io.File;
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import javax.annotation.PostConstruct;
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import javax.annotation.PreDestroy;
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import javax.inject.Inject;
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import org.eclipse.e4.core.contexts.IEclipseContext;
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import org.eclipse.e4.ui.model.application.ui.MUIElement;
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import org.eclipse.jface.dialogs.MessageDialog;
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import org.eclipse.jface.resource.ImageDescriptor;
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import org.eclipse.jface.resource.ResourceLocator;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.SWTError;
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import org.eclipse.swt.browser.Browser;
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import org.eclipse.swt.browser.LocationListener;
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import org.eclipse.swt.browser.ProgressEvent;
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import org.eclipse.swt.browser.ProgressListener;
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import org.eclipse.swt.layout.GridData;
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import org.eclipse.swt.layout.GridLayout;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.Control;
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import org.eclipse.swt.widgets.Label;
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import org.eclipse.swt.widgets.Listener;
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import org.eclipse.swt.widgets.ProgressBar;
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import org.eclipse.swt.widgets.Shell;
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import org.eclipse.swt.widgets.Text;
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import org.eclipse.swt.widgets.ToolBar;
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import org.eclipse.swt.widgets.ToolItem;
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import com.minres.scviewer.e4.application.Messages;
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public class HelpBrowser {
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@Inject IEclipseContext ctx;
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@Inject MUIElement element;
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private static void decorateItem(ToolItem item, String label, String imageName) {
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String fullpath = File.separator+"icons"+File.separator+imageName; //$NON-NLS-1$
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ImageDescriptor descr = ResourceLocator.imageDescriptorFromBundle("com.minres.scviewer.e4.application", fullpath).orElse(null); //$NON-NLS-1$
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if(descr == null) {
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item.setText(label);
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} else {
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item.setImage(descr.createImage());
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item.setToolTipText(label);
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}
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item.setData(label);
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}
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@PostConstruct
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protected Control createComposite(Composite container) {
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// container.getShell().addListener(SWT.Close, e -> {
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// e.doit= false;
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// element.setVisible(false);
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// });
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GridLayout gridLayout = new GridLayout();
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gridLayout.numColumns = 3;
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container.setLayout(gridLayout);
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ToolBar toolbar = new ToolBar(container, SWT.NONE);
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ToolItem itemBack = new ToolItem(toolbar, SWT.PUSH);
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decorateItem(itemBack, Messages.HelpDialog_0, "arrow_undo.png"); //$NON-NLS-1$
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ToolItem itemForward = new ToolItem(toolbar, SWT.PUSH);
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decorateItem(itemForward, Messages.HelpDialog_1, "arrow_redo.png"); //$NON-NLS-1$
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ToolItem itemStop = new ToolItem(toolbar, SWT.PUSH);
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decorateItem(itemStop, Messages.HelpDialog_2, "cross.png"); //$NON-NLS-1$
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ToolItem itemRefresh = new ToolItem(toolbar, SWT.PUSH);
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decorateItem(itemRefresh, Messages.HelpDialog_3, "arrow_refresh.png"); //$NON-NLS-1$
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ToolItem itemGo = new ToolItem(toolbar, SWT.PUSH);
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decorateItem(itemGo, Messages.HelpDialog_4, "accept.png"); //$NON-NLS-1$
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GridData data = new GridData();
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data.horizontalSpan = 3;
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toolbar.setLayoutData(data);
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Label labelAddress = new Label(container, SWT.NONE);
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labelAddress.setText(Messages.HelpDialog_5);
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final Text location = new Text(container, SWT.BORDER);
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data = new GridData();
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data.horizontalAlignment = GridData.FILL;
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data.horizontalSpan = 2;
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data.grabExcessHorizontalSpace = true;
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location.setLayoutData(data);
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final Browser browser;
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try {
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browser = new Browser(container, SWT.NONE);
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data = new GridData();
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// data.widthHint = 800;
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// data.heightHint =600;
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data.horizontalAlignment = GridData.FILL;
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data.verticalAlignment = GridData.FILL;
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data.horizontalSpan = 3;
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data.grabExcessHorizontalSpace = true;
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data.grabExcessVerticalSpace = true;
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browser.setLayoutData(data);
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final Label status = new Label(container, SWT.NONE);
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data = new GridData(GridData.FILL_HORIZONTAL);
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data.horizontalSpan = 2;
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status.setLayoutData(data);
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final ProgressBar progressBar = new ProgressBar(container, SWT.NONE);
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data = new GridData();
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data.horizontalAlignment = GridData.END;
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progressBar.setLayoutData(data);
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/* event handling */
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Listener listener = event -> {
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ToolItem item = (ToolItem) event.widget;
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String string = (String) item.getData();
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if (string.equals(Messages.HelpDialog_0))
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browser.back();
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else if (string.equals(Messages.HelpDialog_1))
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browser.forward();
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else if (string.equals(Messages.HelpDialog_2))
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browser.stop();
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else if (string.equals(Messages.HelpDialog_3))
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browser.refresh();
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else if (string.equals(Messages.HelpDialog_4))
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browser.setUrl(location.getText());
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};
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browser.addProgressListener(new ProgressListener() {
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@Override
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public void changed(ProgressEvent event) {
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if (event.total == 0) return;
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int ratio = event.current * 100 / event.total;
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progressBar.setSelection(ratio);
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}
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@Override
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public void completed(ProgressEvent event) {
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progressBar.setSelection(0);
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}
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});
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browser.addStatusTextListener(event -> status.setText(event.text));
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browser.addLocationListener(LocationListener.changedAdapter(event -> { if (event.top) location.setText(event.location); }));
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itemBack.addListener(SWT.Selection, listener);
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itemForward.addListener(SWT.Selection, listener);
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itemStop.addListener(SWT.Selection, listener);
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itemRefresh.addListener(SWT.Selection, listener);
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itemGo.addListener(SWT.Selection, listener);
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location.addListener(SWT.DefaultSelection, e -> browser.setUrl(location.getText()));
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browser.setUrl(Messages.HelpDialog_6);
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} catch (SWTError e) {
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MessageDialog.openWarning(container.getDisplay().getActiveShell(), Messages.HelpBrowser_7,Messages.HelpBrowser_8+e.getMessage());
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}
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return container;
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}
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void handleShellCloseEvent(){
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}
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} |