Java tutorial
/* * ***************************************************************************** * * Copyright (c) 2006-2012 XMind Ltd. and others. This file is a part of XMind * 3. XMind releases 3 and above are dual-licensed under the Eclipse Public * License (EPL), which is available at * http://www.eclipse.org/legal/epl-v10.html and the GNU Lesser General Public * License (LGPL), which is available at http://www.gnu.org/licenses/lgpl.html * See http://www.xmind.net/license.html for details. Contributors: XMind Ltd. - * initial API and implementation *******************************************************************************/ package org.xmind.ui.internal.dialogs; import java.util.Arrays; import java.util.Comparator; import org.eclipse.e4.ui.workbench.modeling.ESelectionService; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IMenuListener; import org.eclipse.jface.action.IMenuManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.action.Separator; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.resource.FontDescriptor; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.resource.LocalResourceManager; import org.eclipse.jface.resource.ResourceManager; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerComparator; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Menu; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.IWorkbenchActionConstants; import org.eclipse.ui.IWorkbenchPreferenceConstants; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.forms.events.HyperlinkEvent; import org.eclipse.ui.forms.events.IHyperlinkListener; import org.eclipse.ui.forms.widgets.Hyperlink; import org.eclipse.ui.internal.IWorkbenchHelpContextIds; import org.eclipse.ui.internal.WorkbenchImages; import org.eclipse.ui.internal.progress.DetailedProgressViewer; import org.eclipse.ui.internal.progress.FinishedJobs; import org.eclipse.ui.internal.progress.JobInfo; import org.eclipse.ui.internal.progress.JobTreeElement; import org.eclipse.ui.internal.progress.ProgressManager; import org.eclipse.ui.internal.progress.ProgressMessages; import org.eclipse.ui.internal.progress.ProgressViewerContentProvider; import org.eclipse.ui.internal.util.PrefUtil; import org.xmind.ui.internal.MindMapMessages; import org.xmind.ui.internal.e4models.ModelPart; import org.xmind.ui.mindmap.MindMapUI; import org.xmind.ui.resources.ColorUtils; import org.xmind.ui.resources.FontUtils; public class ProgressDialogPart extends ModelPart { @SuppressWarnings("unchecked") private static class ProgressViewerComparator extends ViewerComparator { @Override @SuppressWarnings("rawtypes") public int compare(Viewer testViewer, Object e1, Object e2) { return ((Comparable) e1).compareTo(e2); } @Override public void sort(final Viewer viewer, Object[] elements) { /* * https://bugs.eclipse.org/371354 This ordering is inherently * unstable, since it relies on modifiable properties of the * elements: E.g. the default implementation in JobTreeElement * compares getDisplayString(), many of whose implementations use * getPercentDone(). JavaSE 7+'s TimSort introduced a breaking * change: It now throws a new IllegalArgumentException for bad * comparators. Workaround is to retry a few times. */ for (int retries = 3; retries > 0; retries--) { try { Arrays.sort(elements, new Comparator<Object>() { @Override public int compare(Object a, Object b) { return ProgressViewerComparator.this.compare(viewer, a, b); } }); return; // success } catch (IllegalArgumentException e) { // retry } } // One last try that will log and throw TimSort's IAE if it happens: super.sort(viewer, elements); } } private class ProgressViewer extends DetailedProgressViewer { private Control nullContentArea; public ProgressViewer(Composite parent, int style) { super(parent, style); } @Override public void add(Object[] elements) { super.add(elements); updateForShowingContent(); } @Override public void remove(Object[] elements) { super.remove(elements); updateForShowingContent(); } @Override protected void inputChanged(Object input, Object oldInput) { super.inputChanged(input, oldInput); updateForShowingContent(); } @Override protected void internalRefresh(Object element) { super.internalRefresh(element); updateForShowingContent(); } private void updateForShowingContent() { Control control = getControl(); if (control == null || control.isDisposed()) { return; } if (getContentProvider() == null) { return; } Object[] elements = ((IStructuredContentProvider) getContentProvider()).getElements(getInput()); if (elements.length != 0) { //show content viewer if (nullContentArea != null) { nullContentArea.setVisible(false); ((GridData) nullContentArea.getLayoutData()).exclude = true; } control.setVisible(true); ((GridData) control.getLayoutData()).exclude = false; if (removeAllHyperlink != null && !removeAllHyperlink.isDisposed()) { removeAllHyperlink.setEnabled(true); } } else { //show null content area control.setVisible(false); ((GridData) control.getLayoutData()).exclude = true; if (nullContentArea == null) { nullContentArea = createNullContentArea(control.getParent()); } nullContentArea.setVisible(true); ((GridData) nullContentArea.getLayoutData()).exclude = false; if (removeAllHyperlink != null && !removeAllHyperlink.isDisposed()) { removeAllHyperlink.setEnabled(false); } } getControl().getParent().layout(); } private Composite createNullContentArea(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setBackground(composite.getParent().getBackground()); final GridData layoutData = new GridData(GridData.FILL_BOTH); composite.setLayoutData(layoutData); GridLayout layout = new GridLayout(1, false); layout.marginWidth = 0; layout.marginHeight = 0; layout.verticalSpacing = 0; composite.setLayout(layout); createNullContent(composite); return composite; } private void createNullContent(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setBackground(composite.getParent().getBackground()); composite.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, true, true)); GridLayout layout = new GridLayout(1, false); layout.marginWidth = 0; layout.marginHeight = 0; layout.verticalSpacing = 20; composite.setLayout(layout); Label label = new Label(composite, SWT.NONE); label.setBackground(label.getParent().getBackground()); label.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); label.setImage((Image) resources.get(MindMapUI.getImages().get("progress_no_operations.png", true))); //$NON-NLS-1$ Composite composite2 = new Composite(composite, SWT.NONE); composite2.setBackground(composite2.getParent().getBackground()); composite2.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); GridLayout layout2 = new GridLayout(1, false); layout2.marginWidth = 0; layout2.marginHeight = 0; layout2.verticalSpacing = 0; composite2.setLayout(layout2); Label label2 = new Label(composite2, SWT.NONE); label2.setBackground(label2.getParent().getBackground()); label2.setForeground(resources.createColor(ColorUtils.toDescriptor("#aaaaaa"))); //$NON-NLS-1$ label2.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false)); label2.setText(MindMapMessages.ProgressDialog_NullContet_message); label2.setFont(resources.createFont( FontDescriptor.createFrom(FontUtils.relativeHeight(label2.getFont().getFontData(), 1)))); } } public static final String CONTEXT_MENU_ID = "org.xmind.ui.ProgressDialog"; //$NON-NLS-1$ private ResourceManager resources; private DetailedProgressViewer viewer; private Control control; private Hyperlink removeAllHyperlink; private Action clearAllAction; private Action cancelAction; @Override protected void createContent(Composite parent) { resources = new LocalResourceManager(JFaceResources.getResources(), parent); Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); composite.setBackground((Color) resources.get(ColorUtils.toDescriptor("#ffffff"))); //$NON-NLS-1$ GridLayout layout = new GridLayout(); layout.marginHeight = 0; layout.marginWidth = 0; layout.verticalSpacing = 0; layout.horizontalSpacing = 0; composite.setLayout(layout); createContentsSection(composite); createBottomSection(composite); this.control = composite; } private void createContentsSection(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); composite.setBackground((Color) resources.get(ColorUtils.toDescriptor("#d8d8d8"))); //$NON-NLS-1$ GridLayout layout = new GridLayout(); layout.marginHeight = 1; layout.marginWidth = 1; layout.verticalSpacing = 0; composite.setLayout(layout); Composite composite2 = new Composite(composite, SWT.NONE); composite2.setLayoutData(new GridData(GridData.FILL_BOTH)); composite2.setBackground(parent.getBackground()); GridLayout layout2 = new GridLayout(); layout2.marginHeight = 0; layout2.marginWidth = 0; layout2.marginBottom = 0; layout2.verticalSpacing = 0; layout2.horizontalSpacing = 0; composite2.setLayout(layout2); createProgressViewerSection(composite2); createShowOperationsCheck(composite2); } protected void createProgressViewerSection(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); composite.setBackground(parent.getBackground()); GridLayout layout = new GridLayout(); layout.marginHeight = 0; layout.marginWidth = 0; layout.marginBottom = 0; layout.verticalSpacing = 0; layout.horizontalSpacing = 0; composite.setLayout(layout); createProgressViewer(composite); } private void createProgressViewer(Composite parent) { viewer = new ProgressViewer(parent, SWT.MULTI | SWT.H_SCROLL); viewer.setComparator(new ProgressViewerComparator()); viewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IWorkbenchHelpContextIds.RESPONSIVE_UI); initContentProvider(); createClearAllAction(); createCancelAction(); initContextMenu(); setSelectionProvider(viewer); } private void createShowOperationsCheck(Composite parent) { Composite border = new Composite(parent, SWT.NONE); border.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); border.setBackground((Color) resources.get(ColorUtils.toDescriptor("#d8d8d8"))); //$NON-NLS-1$ GridLayout layout = new GridLayout(); layout.marginHeight = 0; layout.marginWidth = 0; layout.marginTop = 1; layout.marginBottom = 0; layout.verticalSpacing = 0; layout.horizontalSpacing = 0; border.setLayout(layout); Composite composite = new Composite(border, SWT.NONE); composite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); composite.setBackground((Color) resources.get(ColorUtils.toDescriptor("#ffffff"))); //$NON-NLS-1$ GridLayout layout2 = new GridLayout(); layout2.marginHeight = 8; layout2.marginWidth = 0; layout2.marginTop = 0; layout2.marginBottom = 0; layout2.verticalSpacing = 0; layout2.horizontalSpacing = 0; composite.setLayout(layout2); Composite composite2 = new Composite(composite, SWT.NONE); composite2.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); composite2.setBackground(composite.getBackground()); GridLayout layout3 = new GridLayout(2, false); layout3.marginHeight = 0; layout3.marginWidth = 15; layout3.verticalSpacing = 0; layout3.horizontalSpacing = 0; composite2.setLayout(layout3); final Button showSystemCheck = new Button(composite2, SWT.CHECK); showSystemCheck.setBackground(composite2.getBackground()); showSystemCheck.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, false)); showSystemCheck.setText(MindMapMessages.ProgressDialog_ShowSystem_check); showSystemCheck.setForeground((Color) resources.get(ColorUtils.toDescriptor("#000000"))); //$NON-NLS-1$ //set initial selection boolean showSystemJobs = PrefUtil.getAPIPreferenceStore() .getBoolean(IWorkbenchPreferenceConstants.SHOW_SYSTEM_JOBS); showSystemCheck.setSelection(showSystemJobs); showSystemCheck.addSelectionListener(new SelectionListener() { @Override public void widgetSelected(SelectionEvent e) { boolean showSystem = showSystemCheck.getSelection(); PrefUtil.getAPIPreferenceStore().setValue(IWorkbenchPreferenceConstants.SHOW_SYSTEM_JOBS, showSystem); viewer.refresh(); } @Override public void widgetDefaultSelected(SelectionEvent e) { } }); } private void createBottomSection(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); composite.setBackground((Color) resources.get(ColorUtils.toDescriptor("#f3f3f3"))); //$NON-NLS-1$ GridLayout layout = new GridLayout(2, false); layout.marginHeight = 14; layout.marginWidth = 0; layout.marginRight = 13; layout.marginBottom = 1; layout.verticalSpacing = 0; layout.horizontalSpacing = 0; composite.setLayout(layout); createRemoveAllHyperlink(composite); createButtonBar(composite); } private void createRemoveAllHyperlink(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); composite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); composite.setBackground(parent.getBackground()); GridLayout layout = new GridLayout(1, false); layout.marginHeight = 0; layout.marginWidth = 0; layout.marginLeft = 35; composite.setLayout(layout); removeAllHyperlink = new Hyperlink(composite, SWT.NONE); removeAllHyperlink.setBackground(composite.getBackground()); removeAllHyperlink.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, false)); removeAllHyperlink.setText(MindMapMessages.ProgressDialog_RemoveAll_hyperlink); removeAllHyperlink.setUnderlined(false); removeAllHyperlink.setForeground((Color) resources.get(ColorUtils.toDescriptor("#6484fc"))); //$NON-NLS-1$ removeAllHyperlink.setFont((Font) resources.get(FontDescriptor .createFrom(FontUtils.relativeHeight(removeAllHyperlink.getFont().getFontData(), -1)))); removeAllHyperlink.addHyperlinkListener(new IHyperlinkListener() { public void linkExited(HyperlinkEvent e) { } public void linkEntered(HyperlinkEvent e) { } public void linkActivated(HyperlinkEvent e) { clearAllAction.run(); } }); //set hyperlink enabled Object[] elements = ((IStructuredContentProvider) viewer.getContentProvider()) .getElements(viewer.getInput()); removeAllHyperlink.setEnabled(elements.length != 0); } private void createButtonBar(Composite parent) { Composite buttonBar = new Composite(parent, SWT.NONE); buttonBar.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false)); buttonBar.setBackground(parent.getBackground()); GridLayout layout = new GridLayout(); layout.numColumns = 0; layout.marginHeight = 0; layout.marginWidth = 0; layout.verticalSpacing = 0; layout.horizontalSpacing = 6; buttonBar.setLayout(layout); createButton(buttonBar, IDialogConstants.CANCEL_ID, IDialogConstants.CLOSE_LABEL, false); } private Button createButton(Composite parent, int id, String label, boolean defaultButton) { // increment the number of columns in the button bar ((GridLayout) parent.getLayout()).numColumns++; Button button = new Button(parent, SWT.PUSH); button.setBackground(parent.getBackground()); button.setText(label); button.setFont(JFaceResources.getDialogFont()); button.setData(Integer.valueOf(id)); button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { buttonPressed(((Integer) event.widget.getData()).intValue()); } }); if (defaultButton) { Shell shell = parent.getShell(); if (shell != null) { shell.setDefaultButton(button); } } setButtonLayoutData(button); return button; } private void setButtonLayoutData(Button button) { GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL); data.widthHint = 92; button.setLayoutData(data); } private void buttonPressed(int buttonId) { if (IDialogConstants.CANCEL_ID == buttonId) { cancelPressed(); } } private void cancelPressed() { close(); } private void close() { if (control != null && !control.isDisposed()) { control.getShell().close(); } } @Override public void setFocus() { if (viewer != null) { viewer.setFocus(); } } /** * Sets the content provider for the viewer. */ private void initContentProvider() { ProgressViewerContentProvider provider = new ProgressViewerContentProvider(viewer, true, true); viewer.setContentProvider(provider); viewer.setInput(ProgressManager.getInstance()); } /** * Initialize the context menu for the receiver. */ private void initContextMenu() { MenuManager menuMgr = new MenuManager("#PopupMenu"); //$NON-NLS-1$ Menu menu = menuMgr.createContextMenu(viewer.getControl()); menuMgr.add(cancelAction); menuMgr.addMenuListener(new IMenuListener() { @Override public void menuAboutToShow(IMenuManager manager) { JobInfo info = getSelectedInfo(); if (info == null) { return; } } }); menuMgr.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS)); viewer.getControl().setMenu(menu); //todo: this may have bug. registerContextMenu(viewer.getControl(), CONTEXT_MENU_ID); } /** * Get the currently selected job info. Only return it if it is the only * item selected and it is a JobInfo. * * @return JobInfo */ private JobInfo getSelectedInfo() { IStructuredSelection selection = getSelection(); if (selection != null && selection.size() == 1) { JobTreeElement element = (JobTreeElement) selection.getFirstElement(); if (element instanceof JobInfo) { return (JobInfo) element; } } return null; } /** * Return the selected objects. If any of the selections are not JobInfos or * there is no selection then return null. * * @return JobInfo[] or <code>null</code>. */ private IStructuredSelection getSelection() { ESelectionService selectionService = getAdapter(ESelectionService.class); if (selectionService != null) { Object selection = selectionService.getSelection(); return selection instanceof IStructuredSelection ? (IStructuredSelection) selection : null; } return null; } /** * Create the cancel action for the receiver. */ private void createCancelAction() { cancelAction = new Action(ProgressMessages.ProgressView_CancelAction) { @Override public void run() { viewer.cancelSelection(); } }; } /** * Create the clear all action for the receiver. */ private void createClearAllAction() { clearAllAction = new Action(ProgressMessages.ProgressView_ClearAllAction) { @Override public void run() { FinishedJobs.getInstance().clearAll(); } }; clearAllAction.setToolTipText(ProgressMessages.NewProgressView_RemoveAllJobsToolTip); ImageDescriptor id = WorkbenchImages.getWorkbenchImageDescriptor("/elcl16/progress_remall.png"); //$NON-NLS-1$ if (id != null) { clearAllAction.setImageDescriptor(id); } id = WorkbenchImages.getWorkbenchImageDescriptor("/dlcl16/progress_remall.png"); //$NON-NLS-1$ if (id != null) { clearAllAction.setDisabledImageDescriptor(id); } } @Override public <T> T getAdapter(Class<T> adapter) { if (adapter.isAssignableFrom(DetailedProgressViewer.class)) { return adapter.cast(viewer); } return super.getAdapter(adapter); } }