mirror of
https://github.com/eclipse-cdt/cdt
synced 2025-04-23 14:42:11 +02:00
Implementation of 'Change register value' action.
This commit is contained in:
Mikhail Khodjaiants
parent
b02cb0cd37
commit
3befb016c8
1 changed files with 229 additions and 0 deletions
|
|
@ -5,13 +5,33 @@
|
|||
*/
|
||||
package org.eclipse.cdt.debug.internal.ui.actions;
|
||||
|
||||
import java.util.Iterator;
|
||||
|
||||
import org.eclipse.cdt.debug.internal.ui.CDebugImages;
|
||||
import org.eclipse.cdt.debug.internal.ui.ICDebugHelpContextIds;
|
||||
import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
|
||||
import org.eclipse.debug.core.DebugException;
|
||||
import org.eclipse.debug.core.model.IValueModification;
|
||||
import org.eclipse.debug.core.model.IVariable;
|
||||
import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
|
||||
import org.eclipse.jface.viewers.IStructuredSelection;
|
||||
import org.eclipse.jface.viewers.TreeViewer;
|
||||
import org.eclipse.jface.viewers.Viewer;
|
||||
import org.eclipse.swt.SWT;
|
||||
import org.eclipse.swt.custom.TreeEditor;
|
||||
import org.eclipse.swt.events.FocusAdapter;
|
||||
import org.eclipse.swt.events.FocusEvent;
|
||||
import org.eclipse.swt.events.KeyAdapter;
|
||||
import org.eclipse.swt.events.KeyEvent;
|
||||
import org.eclipse.swt.layout.GridData;
|
||||
import org.eclipse.swt.layout.GridLayout;
|
||||
import org.eclipse.swt.widgets.Composite;
|
||||
import org.eclipse.swt.widgets.Label;
|
||||
import org.eclipse.swt.widgets.Shell;
|
||||
import org.eclipse.swt.widgets.Text;
|
||||
import org.eclipse.swt.widgets.Tree;
|
||||
import org.eclipse.swt.widgets.TreeItem;
|
||||
import org.eclipse.ui.IWorkbenchWindow;
|
||||
import org.eclipse.ui.actions.SelectionProviderAction;
|
||||
import org.eclipse.ui.help.WorkbenchHelp;
|
||||
|
||||
|
|
@ -25,6 +45,11 @@ public class ChangeRegisterValueAction extends SelectionProviderAction
|
|||
{
|
||||
protected Tree fTree;
|
||||
protected TreeEditor fTreeEditor;
|
||||
protected Composite fComposite;
|
||||
protected Label fEditorLabel;
|
||||
protected Text fEditorText;
|
||||
protected IVariable fVariable;
|
||||
protected boolean fKeyReleased = false;
|
||||
|
||||
/**
|
||||
* Constructor for ChangeRegisterValueAction.
|
||||
|
|
@ -40,4 +65,208 @@ public class ChangeRegisterValueAction extends SelectionProviderAction
|
|||
fTreeEditor = new TreeEditor( fTree );
|
||||
WorkbenchHelp.setHelp( this, ICDebugHelpContextIds.CHANGE_REGISTER_VALUE_ACTION );
|
||||
}
|
||||
|
||||
/**
|
||||
* Edit the variable value with an inline text editor.
|
||||
*/
|
||||
protected void doActionPerformed( final IVariable variable )
|
||||
{
|
||||
IWorkbenchWindow window = CDebugUIPlugin.getActiveWorkbenchWindow();
|
||||
if ( window == null )
|
||||
{
|
||||
return;
|
||||
}
|
||||
final Shell activeShell = window.getShell();
|
||||
|
||||
// If a previous edit is still in progress, finish it
|
||||
if ( fEditorText != null )
|
||||
{
|
||||
saveChangesAndCleanup( fVariable, activeShell );
|
||||
}
|
||||
fVariable = variable;
|
||||
|
||||
// Use a Composite containing a Label and a Text. This allows us to edit just
|
||||
// the value, while still showing the variable name.
|
||||
fComposite = new Composite( fTree, SWT.NONE );
|
||||
fComposite.setBackground( fTree.getBackground() );
|
||||
GridLayout layout = new GridLayout();
|
||||
layout.numColumns = 2;
|
||||
layout.marginHeight = 0;
|
||||
layout.marginWidth = 0;
|
||||
fComposite.setLayout( layout );
|
||||
|
||||
fEditorLabel = new Label( fComposite, SWT.LEFT );
|
||||
fEditorLabel.setLayoutData( new GridData( GridData.FILL_VERTICAL ) );
|
||||
|
||||
// Fix for bug 1766. Border behavior on Windows & Linux for text
|
||||
// fields is different. On Linux, you always get a border, on Windows,
|
||||
// you don't. Specifying a border on Linux results in the characters
|
||||
// getting pushed down so that only there very tops are visible. Thus,
|
||||
// we have to specify different style constants for the different platforms.
|
||||
int textStyles = SWT.SINGLE | SWT.LEFT;
|
||||
if ( SWT.getPlatform().equals( "win32" ) )
|
||||
{ //$NON-NLS-1$
|
||||
textStyles |= SWT.BORDER;
|
||||
}
|
||||
fEditorText = new Text( fComposite, textStyles );
|
||||
fEditorText.setLayoutData( new GridData( GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL ) );
|
||||
String valueString = ""; //$NON-NLS-1$
|
||||
try
|
||||
{
|
||||
valueString = fVariable.getValue().getValueString();
|
||||
}
|
||||
catch( DebugException de )
|
||||
{
|
||||
CDebugUIPlugin.errorDialog( "Setting the register value failed.", de );
|
||||
}
|
||||
TreeItem[] selectedItems = fTree.getSelection();
|
||||
fTreeEditor.horizontalAlignment = SWT.LEFT;
|
||||
fTreeEditor.grabHorizontal = true;
|
||||
fTreeEditor.setEditor( fComposite, selectedItems[0] );
|
||||
|
||||
// There is no API on the model presentation to get just the variable name,
|
||||
// so we have to make do with just calling IVariable.getName()
|
||||
String varName = ""; //$NON-NLS-1$
|
||||
try
|
||||
{
|
||||
varName = fVariable.getName();
|
||||
}
|
||||
catch (DebugException de)
|
||||
{
|
||||
CDebugUIPlugin.errorDialog( "Setting the register value failed.", de );
|
||||
}
|
||||
fEditorLabel.setText( varName + "=" ); //$NON-NLS-1$
|
||||
|
||||
fEditorText.setText( valueString );
|
||||
fEditorText.selectAll();
|
||||
|
||||
fComposite.layout( true );
|
||||
fComposite.setVisible( true );
|
||||
fEditorText.setFocus();
|
||||
|
||||
// CR means commit the changes, ESC means abort changing the value
|
||||
fEditorText.addKeyListener(
|
||||
new KeyAdapter()
|
||||
{
|
||||
public void keyReleased( KeyEvent event )
|
||||
{
|
||||
if ( event.character == SWT.CR )
|
||||
{
|
||||
if ( fKeyReleased )
|
||||
{
|
||||
saveChangesAndCleanup( fVariable, activeShell );
|
||||
}
|
||||
else
|
||||
{
|
||||
cleanup();
|
||||
return;
|
||||
}
|
||||
}
|
||||
if ( event.character == SWT.ESC )
|
||||
{
|
||||
cleanup();
|
||||
return;
|
||||
}
|
||||
fKeyReleased = true;
|
||||
}
|
||||
} );
|
||||
|
||||
// If the focus is lost, then act as if user hit CR and commit changes
|
||||
fEditorText.addFocusListener(
|
||||
new FocusAdapter()
|
||||
{
|
||||
public void focusLost( FocusEvent fe )
|
||||
{
|
||||
if ( fKeyReleased )
|
||||
{
|
||||
saveChangesAndCleanup( fVariable, activeShell );
|
||||
}
|
||||
else
|
||||
{
|
||||
cleanup();
|
||||
}
|
||||
}
|
||||
} );
|
||||
}
|
||||
|
||||
/**
|
||||
* If the new value validates, save it, and dispose the text widget,
|
||||
* otherwise sound the system bell and leave the user in the editor.
|
||||
*/
|
||||
protected void saveChangesAndCleanup( IVariable variable, Shell shell )
|
||||
{
|
||||
String newValue = fEditorText.getText();
|
||||
try
|
||||
{
|
||||
if ( !variable.verifyValue( newValue ) )
|
||||
{
|
||||
shell.getDisplay().beep();
|
||||
return;
|
||||
}
|
||||
variable.setValue( newValue );
|
||||
}
|
||||
catch( DebugException de )
|
||||
{
|
||||
CDebugUIPlugin.errorDialog( "Setting the register value failed.", de );
|
||||
}
|
||||
cleanup();
|
||||
}
|
||||
|
||||
/**
|
||||
* Tidy up the widgets that were used
|
||||
*/
|
||||
private void cleanup()
|
||||
{
|
||||
fKeyReleased = false;
|
||||
if ( fEditorText != null )
|
||||
{
|
||||
fEditorText.dispose();
|
||||
fEditorText = null;
|
||||
fVariable = null;
|
||||
fTreeEditor.setEditor( null, null );
|
||||
fComposite.setVisible( false );
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Updates the enabled state of this action based
|
||||
* on the selection
|
||||
*/
|
||||
protected void update( IStructuredSelection sel )
|
||||
{
|
||||
Iterator iter = sel.iterator();
|
||||
if (iter.hasNext())
|
||||
{
|
||||
Object object = iter.next();
|
||||
if ( object instanceof IValueModification )
|
||||
{
|
||||
IValueModification varMod = (IValueModification)object;
|
||||
if ( !varMod.supportsValueModification() )
|
||||
{
|
||||
setEnabled( false );
|
||||
return;
|
||||
}
|
||||
setEnabled( !iter.hasNext() );
|
||||
return;
|
||||
}
|
||||
}
|
||||
setEnabled( false );
|
||||
}
|
||||
|
||||
/**
|
||||
* @see Action
|
||||
*/
|
||||
public void run()
|
||||
{
|
||||
Iterator iterator = getStructuredSelection().iterator();
|
||||
doActionPerformed( (IVariable)iterator.next() );
|
||||
}
|
||||
|
||||
/**
|
||||
* @see SelectionProviderAction
|
||||
*/
|
||||
public void selectionChanged( IStructuredSelection sel )
|
||||
{
|
||||
update( sel );
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue