| /****************************************************************************** |
| * Copyright (c) 2006 IBM Corporation. |
| * 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 Implementation |
| * |
| *****************************************************************************/ |
| package org.eclipse.ptp.utils.ui.swt; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.FontMetrics; |
| import org.eclipse.swt.graphics.GC; |
| 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.Layout; |
| |
| /** |
| * This generic group of controls provides an structure with |
| * an optional label and an optional button and provides space |
| * for a user-defined control. |
| * |
| * @author Richard Maciel |
| * |
| */ |
| public abstract class GenericControlGroup extends Composite { |
| Label label; |
| Button button; |
| Control customControl; |
| boolean buttonEnabled = true; |
| |
| public GenericControlGroup(Composite parent, int bitmask, int rows, int chars) { |
| super(parent, SWT.NONE); |
| createContents(bitmask, rows, chars); |
| } |
| |
| public GenericControlGroup(Composite parent, GenericControlMold mold) { |
| super(parent, SWT.NONE); |
| int rows = 0, chars = 0; |
| if (mold.hasHeight()) { |
| rows = mold.getHeight(); |
| } |
| if (mold.hasWidth()) { |
| chars = mold.getWidth(); |
| } |
| createContents(mold.bitmask, rows, chars); |
| |
| if (mold.label != null) { |
| setLabel(mold.label); |
| } |
| if (mold.buttonLabel != null) { |
| setButtonLabel(mold.buttonLabel); |
| } |
| if (mold.tooltip != null) { |
| setToolTip(mold.tooltip); |
| } |
| } |
| |
| protected void createContents(int bitmask, int rows, int chars) { |
| createLayout(bitmask); |
| createLabel(bitmask); |
| |
| // Generate GridData for control |
| GridData gd = new GridData(); |
| gd.grabExcessHorizontalSpace = true; |
| gd.horizontalAlignment = SWT.FILL; |
| gd.horizontalSpan = 1; |
| customControl = createCustomControl(bitmask, gd); |
| if (rows > 0) { |
| gd.heightHint = getControlCharHeight(customControl) * rows; |
| } |
| if (chars > 0) { |
| gd.widthHint = getControlCharWidth(customControl) * chars; |
| } |
| customControl.setLayoutData(gd); |
| |
| createButton(bitmask); |
| } |
| |
| /** |
| * Create the layout for the enclosing composite.. |
| * |
| * @param mold |
| * @return Layout |
| */ |
| protected void createLayout(int bitmask) { |
| GridLayout layout = new GridLayout(); |
| |
| layout.marginHeight = LayoutDefinitions.marginHeight; |
| layout.marginWidth = LayoutDefinitions.marginWidth; |
| layout.marginRight = 0; |
| layout.marginLeft = 0; |
| layout.marginBottom = 0; |
| layout.marginTop = 0; |
| layout.horizontalSpacing = LayoutDefinitions.horizontalSpacing; |
| layout.verticalSpacing = LayoutDefinitions.verticalSpacing; |
| |
| /* |
| * Start with one column |
| */ |
| layout.numColumns = 1; |
| |
| /* |
| * Add a second column if the label is shown on the left/ |
| */ |
| if( ( (bitmask & GenericControlMold.HAS_LABEL) != 0 ) && |
| ( (bitmask & GenericControlMold.LABELABOVE) == 0 ) ) { |
| layout.numColumns++; |
| } |
| |
| /* |
| * Add one more column if the button is shown on the right. |
| */ |
| if( (bitmask & GenericControlMold.HASBUTTON ) != 0 ) { |
| layout.numColumns++; |
| } |
| |
| this.setLayout(layout); |
| |
| /** |
| * Set layout data if parent has a GridLayout |
| */ |
| if (this.getParent().getLayout() instanceof GridLayout) { |
| if ((bitmask & TextMold.GRID_DATA_ALIGNMENT_FILL) != 0 |
| || (bitmask & TextMold.GRID_DATA_GRAB_EXCESS_SPACE) != 0 |
| || (bitmask & TextMold.GRID_DATA_SPAN) != 0) { |
| GridData gdpp = new GridData(); |
| |
| if( (bitmask & GenericControlMold.GRID_DATA_ALIGNMENT_FILL) != 0) { |
| //gdpp.grabExcessHorizontalSpace = true; |
| gdpp.horizontalAlignment = SWT.FILL; |
| } |
| |
| if( (bitmask & GenericControlMold.GRID_DATA_GRAB_EXCESS_SPACE) != 0) { |
| gdpp.grabExcessHorizontalSpace = true; |
| //gdpp.horizontalAlignment = SWT.FILL; |
| } |
| |
| if( (bitmask & GenericControlMold.GRID_DATA_SPAN) != 0) { |
| GridLayout glayout = (GridLayout)this.getParent().getLayout(); |
| |
| gdpp.horizontalSpan = glayout.numColumns; |
| } |
| this.setLayoutData(gdpp); |
| } |
| } |
| |
| } |
| |
| /** |
| * Generates a label control on this composite |
| * |
| * @param mold |
| */ |
| protected void createLabel(int bitmask) { |
| if ((bitmask & GenericControlMold.HAS_LABEL) != 0) { |
| label = new Label(this, SWT.NONE); |
| |
| GridData gd = new GridData(); |
| gd.horizontalAlignment = SWT.LEFT; |
| gd.verticalAlignment = SWT.CENTER; |
| gd.verticalSpan = 1; |
| |
| if( (bitmask & GenericControlMold.LABELABOVE ) |
| != 0 ) { |
| gd.horizontalSpan = |
| ((GridLayout)this.getLayout()).numColumns; |
| } |
| |
| label.setLayoutData(gd); |
| } |
| } |
| |
| /** |
| * User-implemented method to generate a control on this |
| * composite |
| * |
| * @param mold |
| */ |
| abstract protected Control createCustomControl(int bitmask, GridData gridData); |
| |
| protected void createButton(int bitmask) { |
| // Create Button if desired |
| if( (bitmask & GenericControlMold.HASBUTTON) != 0) { |
| button = new Button(this, SWT.BUTTON1); |
| |
| GridData gd = new GridData(); |
| gd.horizontalAlignment = SWT.RIGHT; |
| gd.verticalAlignment = SWT.TOP; |
| gd.verticalSpan = 1; |
| gd.horizontalSpan = 1; |
| button.setLayoutData(gd); |
| } |
| } |
| |
| protected int getControlCharWidth(Control control) { |
| GC gc = new GC (control); |
| FontMetrics fm = gc.getFontMetrics (); |
| int width = fm.getAverageCharWidth(); |
| gc.dispose(); |
| return width; |
| } |
| |
| protected int getControlCharHeight(Control control) { |
| GC gc = new GC (control); |
| FontMetrics fm = gc.getFontMetrics (); |
| int height = fm.getHeight(); |
| gc.dispose(); |
| return height; |
| } |
| |
| public Button getButton() { |
| return button; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.swt.widgets.Control#setEnabled(boolean) |
| */ |
| public void setEnabled(boolean enabled) { |
| super.setEnabled(enabled); |
| |
| enableButton(); |
| if(label != null) { |
| label.setEnabled(enabled); |
| } |
| customControl.setEnabled(enabled); |
| } |
| |
| public void setButtonEnabled(boolean enabled) { |
| this.buttonEnabled = enabled; |
| enableButton(); |
| } |
| |
| private void enableButton() { |
| if(button != null) { |
| button.setEnabled(buttonEnabled && this.getEnabled()); |
| } |
| } |
| |
| public String getLabel() { |
| if (label != null) { |
| return label.getText(); |
| } else { |
| return null; |
| } |
| } |
| |
| public void setLabel(String text) { |
| if (label != null) { |
| label.setText(text); |
| } else { |
| throw new IllegalArgumentException(Messages.GenericControlGroup_NoControlGroupLabel); |
| } |
| } |
| |
| public String getButtonLabel() { |
| if (button != null) { |
| return button.getText(); |
| } else { |
| return null; |
| } |
| } |
| |
| public void setButtonLabel(String text) { |
| if (button != null) { |
| button.setText(text); |
| } else { |
| throw new IllegalArgumentException(Messages.GenericControlGroup_NoControlGroupButton); |
| } |
| } |
| |
| public void setToolTip(String text) { |
| this.setToolTipText(text); |
| if (button != null) { |
| button.setToolTipText(text); |
| } |
| if (label != null) { |
| label.setToolTipText(text); |
| } |
| } |
| |
| } |