archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/preferences/AbstractConfigurationBlock.java

   1 /*
   2  * Copyright (c) 2003-2004 Christopher Lenz and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     Christopher Lenz - initial API and implementation
  10  *
  11  * $Id: AbstractConfigurationBlock.java,v 1.1 2004-09-02 18:11:50 jsurfer Exp $
  12  */
  13
  14 package net.sourceforge.phpeclipse.css.ui.internal.preferences;
  15
  16 import java.util.ArrayList;
  17 import java.util.HashMap;
  18 import java.util.Iterator;
  19 import java.util.List;
  20 import java.util.Map;
  21
  22 import org.eclipse.jface.dialogs.Dialog;
  23 import org.eclipse.jface.preference.IPreferenceStore;
  24 import org.eclipse.swt.SWT;
  25 import org.eclipse.swt.events.ModifyEvent;
  26 import org.eclipse.swt.events.ModifyListener;
  27 import org.eclipse.swt.events.SelectionEvent;
  28 import org.eclipse.swt.events.SelectionListener;
  29 import org.eclipse.swt.graphics.FontMetrics;
  30 import org.eclipse.swt.graphics.GC;
  31 import org.eclipse.swt.layout.GridData;
  32 import org.eclipse.swt.widgets.Button;
  33 import org.eclipse.swt.widgets.Composite;
  34 import org.eclipse.swt.widgets.Control;
  35 import org.eclipse.swt.widgets.Label;
  36 import org.eclipse.swt.widgets.Text;
  37
  38 /**
  39  *
  40  */
  41 abstract class AbstractConfigurationBlock {
  42
  43         // Instance Variables ------------------------------------------------------
  44
  45         private IPreferenceStore fPreferenceStore;
  46
  47         private Map fCheckBoxes = new HashMap();
  48         private SelectionListener fCheckBoxListener = new SelectionListener() {
  49                 public void widgetDefaultSelected(SelectionEvent e) {
  50                 }
  51                 public void widgetSelected(SelectionEvent e) {
  52                         Button button = (Button) e.widget;
  53                         getPreferenceStore().setValue((String) fCheckBoxes.get(button),
  54                                 button.getSelection());
  55                 }
  56         };
  57
  58         private Map fTextFields = new HashMap();
  59         private ModifyListener fTextFieldListener = new ModifyListener() {
  60                 public void modifyText(ModifyEvent e) {
  61                         Text text = (Text) e.widget;
  62                         getPreferenceStore().setValue((String) fTextFields.get(text),
  63                                 text.getText());
  64                 }
  65         };
  66
  67         private List fNumberFields = new ArrayList();
  68         private ModifyListener fNumberFieldListener = new ModifyListener() {
  69                 public void modifyText(ModifyEvent e) {
  70                         //numberFieldChanged((Text) e.widget);
  71                 }
  72         };
  73
  74         private Map fLabels = new HashMap();
  75
  76         // Constructors ------------------------------------------------------------
  77
  78         public AbstractConfigurationBlock(IPreferenceStore store) {
  79                 this.fPreferenceStore = store;
  80         }
  81
  82         // Public Methods ----------------------------------------------------------
  83
  84         public void initializeFields() {
  85                 for (Iterator i = fCheckBoxes.keySet().iterator(); i.hasNext(); ) {
  86                         Button button = (Button) i.next();
  87                         String key = (String) fCheckBoxes.get(button);
  88                         button.setSelection(getPreferenceStore().getBoolean(key));
  89                 }
  90                 for (Iterator i = fTextFields.keySet().iterator(); i.hasNext(); ) {
  91                         Text text = (Text) i.next();
  92                         String key = (String) fTextFields.get(text);
  93                         text.setText(getPreferenceStore().getString(key));
  94                 }
  95         }
  96
  97         // Protected Methods -------------------------------------------------------
  98
  99         protected final Button addBooleanField(Composite parent, String label,
 100                 String key, int indentation) {
 101
 102                 Button checkBox = new Button(parent, SWT.CHECK);
 103                 checkBox.setText(label);
 104
 105                 GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 106                 gd.horizontalIndent = indentation;
 107                 gd.horizontalSpan = 2;
 108                 checkBox.setLayoutData(gd);
 109                 checkBox.addSelectionListener(fCheckBoxListener);
 110
 111                 fCheckBoxes.put(checkBox, key);
 112
 113                 return checkBox;
 114         }
 115
 116         protected final Control addIntegerField(Composite composite, String label,
 117                 String key, int textLimit, int indentation) {
 118
 119                 Text textControl =
 120                         addStringField(composite, label, textLimit, indentation);
 121                 fTextFields.put(textControl, key);
 122                 fNumberFields.add(textControl);
 123                 textControl.addModifyListener(fNumberFieldListener);
 124
 125                 return textControl;
 126         }
 127
 128         protected final Control addTextField(Composite composite, String label,
 129                 String key, int textLimit, int indentation) {
 130
 131                 Text textControl =
 132                         addStringField(composite, label, textLimit, indentation);
 133                 fTextFields.put(textControl, key);
 134                 textControl.addModifyListener(fTextFieldListener);
 135
 136                 return textControl;
 137         }
 138
 139         protected final int convertHeightInCharsToPixels(Control control,
 140                 int chars) {
 141                 GC gc = new GC(control);
 142                 gc.setFont(control.getFont());
 143                 FontMetrics fontMetrics = gc.getFontMetrics();
 144                 gc.dispose();
 145                 if (fontMetrics == null) {
 146                         return 0;
 147                 }
 148                 return Dialog.convertHeightInCharsToPixels(fontMetrics, chars);
 149         }
 150
 151         protected final int convertWidthInCharsToPixels(Control control,
 152                 int chars) {
 153                 GC gc = new GC(control);
 154                 gc.setFont(control.getFont());
 155                 FontMetrics fontMetrics = gc.getFontMetrics();
 156                 gc.dispose();
 157                 if (fontMetrics == null) {
 158                         return 0;
 159                 }
 160                 return Dialog.convertWidthInCharsToPixels(fontMetrics, chars);
 161         }
 162
 163         protected final Control getLabel(Control field) {
 164                 return (Control) fLabels.get(field);
 165         }
 166
 167         protected final IPreferenceStore getPreferenceStore() {
 168                 return fPreferenceStore;
 169         }
 170
 171         // Private Methods ---------------------------------------------------------
 172
 173         private Text addStringField(Composite composite, String label,
 174                 int textLimit, int indentation) {
 175
 176                 Label labelControl = new Label(composite, SWT.NONE);
 177                 labelControl.setText(label);
 178                 GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 179                 gd.horizontalIndent = indentation;
 180                 labelControl.setLayoutData(gd);
 181
 182                 Text textControl = new Text(composite, SWT.BORDER | SWT.SINGLE);
 183                 gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 184                 gd.widthHint = convertWidthInCharsToPixels(textControl, textLimit + 1);
 185                 textControl.setLayoutData(gd);
 186                 textControl.setTextLimit(textLimit);
 187
 188                 fLabels.put(textControl, labelControl);
 189
 190                 return textControl;
 191         }
 192
 193 }