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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.eclipse.org/org/documents/epl-v10.php
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.ide.eclipse.adt.internal.lint;
     17 
     18 import com.android.ide.eclipse.adt.AdtPlugin;
     19 
     20 import org.eclipse.core.runtime.IStatus;
     21 import org.eclipse.core.runtime.Status;
     22 import org.eclipse.jface.viewers.CheckboxTableViewer;
     23 import org.eclipse.jface.viewers.IStructuredContentProvider;
     24 import org.eclipse.jface.viewers.Viewer;
     25 import org.eclipse.swt.SWT;
     26 import org.eclipse.swt.layout.GridData;
     27 import org.eclipse.swt.layout.GridLayout;
     28 import org.eclipse.swt.widgets.Composite;
     29 import org.eclipse.swt.widgets.Control;
     30 import org.eclipse.swt.widgets.Event;
     31 import org.eclipse.swt.widgets.Label;
     32 import org.eclipse.swt.widgets.Listener;
     33 import org.eclipse.swt.widgets.Shell;
     34 import org.eclipse.swt.widgets.Table;
     35 import org.eclipse.ui.dialogs.SelectionStatusDialog;
     36 
     37 /**
     38  * Dialog for editing visible columns in the {@link LintList}
     39  */
     40 class ColumnDialog extends SelectionStatusDialog implements Listener, IStructuredContentProvider {
     41     private LintColumn[] mColumns;
     42     private LintColumn[] mSelectedColumns;
     43     private CheckboxTableViewer mViewer;
     44 
     45         public ColumnDialog(Shell parent, LintColumn[] fields, LintColumn[] selected) {
     46             super(parent);
     47             mColumns = fields;
     48             mSelectedColumns = selected;
     49             setTitle("Select Visible Columns");
     50             setHelpAvailable(false);
     51         }
     52 
     53         @Override
     54         protected Control createDialogArea(Composite parent) {
     55             Composite container = new Composite(parent, SWT.NONE);
     56             container.setLayout(new GridLayout(1, false));
     57             GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1);
     58             // Wide enough to accommodate the error label
     59             gridData.widthHint = 500;
     60             container.setLayoutData(gridData);
     61 
     62             Label lblSelectVisibleColumns = new Label(container, SWT.NONE);
     63             lblSelectVisibleColumns.setText("Select visible columns:");
     64 
     65             mViewer = CheckboxTableViewer.newCheckList(container,
     66                     SWT.BORDER | SWT.FULL_SELECTION | SWT.HIDE_SELECTION);
     67             Table table = mViewer.getTable();
     68             table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
     69             mViewer.setContentProvider(this);
     70 
     71             mViewer.setInput(mColumns);
     72             mViewer.setCheckedElements(mSelectedColumns);
     73 
     74             validate();
     75 
     76             return container;
     77         }
     78 
     79         @Override
     80         protected void computeResult() {
     81             Object[] checked = mViewer.getCheckedElements();
     82             mSelectedColumns = new LintColumn[checked.length];
     83             for (int i = 0, n = checked.length; i < n; i++) {
     84                 mSelectedColumns[i] = (LintColumn) checked[i];
     85             }
     86         }
     87 
     88         public LintColumn[] getSelectedColumns() {
     89             return mSelectedColumns;
     90         }
     91 
     92         @Override
     93         public void handleEvent(Event event) {
     94             validate();
     95         }
     96 
     97         private void validate() {
     98             IStatus status;
     99             computeResult();
    100 
    101             if (mViewer.getCheckedElements().length <= 1) {
    102                 status = new Status(IStatus.ERROR, AdtPlugin.PLUGIN_ID,
    103                         "Must selected at least one column");
    104             } else {
    105                 status = new Status(IStatus.OK, AdtPlugin.PLUGIN_ID, null);
    106             }
    107             updateStatus(status);
    108         }
    109 
    110         // ---- Implements IStructuredContentProvider ----
    111 
    112         @Override
    113         public void dispose() {
    114         }
    115 
    116         @Override
    117         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
    118         }
    119 
    120         @Override
    121         public Object[] getElements(Object inputElement) {
    122             return mColumns;
    123         }
    124     }