Java tutorial
/******************************************************************************* * Copyright (c) 2008, 2011 IBM Corporation 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: * IBM Corporation - initial API and implementation ******************************************************************************/ package org.eclipse.ui.internal.views.markers; import java.util.ArrayList; import java.util.Collection; import java.util.Iterator; import java.util.List; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.viewers.ITableLabelProvider; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.views.markers.MarkerField; /** * MarkersViewSettingDialog is the dialog for showing marker preferences. * * * @since 3.7 * @author Hitesh Soliwal * */ public class MarkersViewColumnsDialog extends ViewerColumnsDialog { private ExtendedMarkersView extendedView; /** * Create a new instance of the receiver. * * @param view * - the view this is being launched from */ public MarkersViewColumnsDialog(ExtendedMarkersView view) { super(view.getSite().getShell()); this.extendedView = view; initialize(false); } /* * (non-Javadoc) * * @see * org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets * .Shell) */ protected void configureShell(Shell newShell) { super.configureShell(newShell); newShell.setText(JFaceResources.getString("ConfigureColumnsDialog_Title")); //$NON-NLS-1$ } /* * (non-Javadoc) * * @see org.eclipse.jface.window.Window#getShellStyle() */ protected int getShellStyle() { return super.getShellStyle() | SWT.RESIZE; } /* * (non-Javadoc) * * @see * org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets * .Composite) */ protected Control createDialogArea(Composite parent) { Control control = super.createDialogArea(parent); return control; } /* * (non-Javadoc) * * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ protected void okPressed() { extendedView.setVisibleFields(getVisibleFields(), getNewWidths()); super.okPressed(); } /** */ private int[] getNewWidths() { List visible = getVisible(); int[] widths = new int[visible.size()]; int i = 0; Iterator iterator = visible.iterator(); while (iterator.hasNext()) { widths[i] = ((FieldEntry) iterator.next()).width; i++; } return widths; } private Collection getVisibleFields() { List visible = getVisible(); List list = new ArrayList(visible.size()); Iterator iterator = visible.iterator(); while (iterator.hasNext()) { list.add(((FieldEntry) iterator.next()).field); } return list; } /* * (non-Javadoc) * * @see org.eclipse.ui.preferences.ViewSettingsDialog#performDefaults() */ protected void performDefaults() { initialize(true); super.performDefaults(); } /** */ void initialize(boolean defaultWidths) { MarkerField[] allFields = extendedView.getBuilder().getGenerator().getAllFields(); MarkerField[] visibleFields = null; if (defaultWidths) { visibleFields = extendedView.getBuilder().getGenerator().getInitialVisible(); } else { visibleFields = extendedView.getBuilder().getGenerator().getVisibleFields(); } List visible = getVisible(); List nonVisible = getNonVisible(); visible.clear(); nonVisible.clear(); FieldEntry entry = null; for (int i = 0; i < allFields.length; i++) { if (!contains(visibleFields, allFields[i])) { entry = new FieldEntry(allFields[i], -1); entry.width = extendedView.getFieldWidth(entry.field, defaultWidths ? 0 : -1, !defaultWidths); entry.visible = false; nonVisible.add(entry); } } for (int i = 0; i < visibleFields.length; i++) { entry = new FieldEntry(visibleFields[i], -1); entry.width = extendedView.getFieldWidth(entry.field, defaultWidths ? 0 : -1, !defaultWidths); entry.visible = true; visible.add(entry); } } /** * @param visibleFields * @param field */ private boolean contains(MarkerField[] visibleFields, MarkerField field) { for (int i = 0; i < visibleFields.length; i++) { if (visibleFields[i].equals(field)) { return true; } } return false; } /* * (non-Javadoc) * * @see * org.eclipse.ui.internal.views.markers.ViewerColumnsDialog#getLabelProvider * () */ protected ITableLabelProvider getLabelProvider() { return new TableLabelProvider() { public String getText(Object element) { return ((FieldEntry) element).field.getName(); } }; } /* * (non-Javadoc) * * @see org.eclipse.ui.internal.views.markers.ViewerColumnsDialog# * getColumnInfoProvider() */ protected IColumnInfoProvider getColumnInfoProvider() { return new IColumnInfoProvider() { public int getColumnIndex(Object columnObj) { return getVisible().indexOf(columnObj); } public int getColumnWidth(Object columnObj) { FieldEntry field = (FieldEntry) columnObj; if (field.width <= 0) { field.width = extendedView.getFieldWidth(field.field, field.width, false); } return field.width; } public boolean isColumnVisible(Object columnObj) { return ((FieldEntry) columnObj).visible; } public boolean isColumnMovable(Object columnObj) { return true; } public boolean isColumnResizable(Object columnObj) { return true; } }; } /* * (non-Javadoc) * * @see * org.eclipse.ui.internal.views.markers.ViewerColumnsDialog#getColumnUpdater * () */ protected IColumnUpdater getColumnUpdater() { return new IColumnUpdater() { public void setColumnVisible(Object columnObj, boolean visible) { ((FieldEntry) columnObj).visible = visible; } public void setColumnMovable(Object columnObj, boolean movable) { // not implemented } public void setColumnIndex(Object columnObj, int index) { // ignore } public void setColumnResizable(Object columnObj, boolean resizable) { // ignore } public void setColumnWidth(Object columnObj, int newWidth) { ((FieldEntry) columnObj).width = newWidth; } }; } static class FieldEntry { final MarkerField field; int width; boolean visible; FieldEntry(MarkerField field, int width) { this.field = field; this.width = width; visible = false; } public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((field == null) ? 0 : field.hashCode()); return result; } public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; FieldEntry other = (FieldEntry) obj; if (field == null) { if (other.field != null) return false; } else if (!field.equals(other.field)) return false; return true; } } }