Home » Eclipse Projects » JFace » [content assist] Problem with ContentAssist at TextCellEditor
| [content assist] Problem with ContentAssist at TextCellEditor [message #9146] |
Mon, 25 May 2009 14:36  |
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Hi,
I try to add a content assist system on my TextCellEditors in a Table
with filtering and so on.
It works fine if I use the cursor and enter keys but if I select an
entry from the proposallist with the mouse it dosen't work.
Thanks in advance for tips and best regards,
Heiko
PS: for this snippet I use Eclipse 3.5RC2 and Java 1.6 on Vista.
Here are my code snippet to demonstrate my problem:
package de.nacorswelt.contentassist;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.jface.bindings.keys.KeyStroke;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.fieldassist.ContentProposalAdapter;
import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
import org.eclipse.jface.fieldassist.IContentProposal;
import org.eclipse.jface.fieldassist.IContentProposalListener;
import org.eclipse.jface.fieldassist.IContentProposalListener2;
import org.eclipse.jface.fieldassist.IContentProposalProvider;
import org.eclipse.jface.fieldassist.TextContentAdapter;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
public class TestSnippet {
public abstract class AbstractModelObject {
private PropertyChangeSupport propertyChangeSupport = new
PropertyChangeSupport(
this);
public void addPropertyChangeListener(PropertyChangeListener listener) {
propertyChangeSupport.addPropertyChangeListener(listener);
}
public void addPropertyChangel_istener(String propertyName,
PropertyChangeListener listener) {
propertyChangeSupport.addPropertyChangeListener(propertyName ,
listener);
}
public void removePropertyChangeListener(PropertyChangeListener
listener) {
propertyChangeSupport.removePropertyChangeListener(listener) ;
}
public void removePropertyChangeListener(String propertyName,
PropertyChangeListener listener) {
propertyChangeSupport.removePropertyChangeListener(propertyN ame,
listener);
}
protected void firePropertyChange(String propertyName, Object oldValue,
Object newValue) {
propertyChangeSupport.firePropertyChange(propertyName, oldValue,
newValue);
}
}
public class Person extends AbstractModelObject {
String name;
String firstName;
public Person(String firstName, String name) {
this.name = name;
this.firstName = firstName;
}
public String getName() {
return name;
}
public void setName(String name) {
firePropertyChange("name", this.name, this.name = name);
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
firePropertyChange("firstName", this.firstName,
this.firstName = firstName);
}
}
public class CommiterList {
private List<Person> people = new LinkedList<Person>();
{
people.add(new Person("Dave", "Orme"));
people.add(new Person("David", "Orme"));
people.add(new Person("Gili", "Mendel"));
people.add(new Person("Ginger", "Mendel"));
people.add(new Person("Joe", "Winchester"));
people.add(new Person("Boris", "Bokowski"));
people.add(new Person("Brad", "Reynolds"));
people.add(new Person("Matthew", "Hall"));
people.add(new Person("Mobi", "Hall"));
}
public List<Person> getPeople() {
return people;
}
}
public class MyEditingSupport extends EditingSupport {
private CellEditor textEditor;
private Image contentHelpImage;
public MyEditingSupport(TableViewer viewer) {
super(viewer);
textEditor = new TextCellEditor(viewer.getTable());
if (contentHelpImage == null)
contentHelpImage = FieldDecorationRegistry.getDefault()
.getFieldDecoration(
FieldDecorationRegistry.DEC_CONTENT_PROPOSAL)
.getImage();
PersonProposalProvider proposalProvider = new PersonProposalProvider(
commiterList.getPeople());
proposalProvider.setFiltering(true);
ContentProposalAdapter adapter = new ContentProposalAdapter(
textEditor.getControl(), new TextContentAdapter(),
proposalProvider, KeyStroke.getInstance(SWT.CTRL, 32), null);
adapter.setPropagateKeys(true);
adapter
.setProposalAcceptanceStyle(ContentProposalAdapter.PROPOSAL_ REPLACE);
ControlDecoration dec = new ControlDecoration(textEditor
.getControl(), SWT.BOTTOM | SWT.RIGHT);
dec.setImage(contentHelpImage);
dec.setDescriptionText("Use VCtrl+SpaceV to open List");
}
protected boolean canEdit(Object element) {
if (element != null) {
return true;
}
return false;
}
protected CellEditor getCellEditor(Object element) {
return textEditor;
}
protected Object getValue(Object element) {
if (element instanceof Person) {
return ((Person) element).getFirstName();
}
return element.toString();
}
protected void setValue(Object element, Object value) {
Person _newPerson = null;
if (value != null) {
for (Person p : commiterList.getPeople()) {
if (p.getFirstName().equals(value)) {
_newPerson = p;
break;
}
}
}
if (_newPerson != null) {
int oldElementlndex = model.indexOf(element);
model.remove(oldElementlndex);
model.add(oldElementlndex, _newPerson);
MessageDialog.openInformation(shell, "successful", "Element ist set
to: " + _newPerson.getFirstName() + " " + _newPerson.getName());
getViewer().refresh(true);
} else {
MessageDialog.openError(shell, "Error", "The given value are:"
+ value);
}
}
}
public class FirstNameLabelProvider extends ColumnLabelProvider {
public String getText(Object element) {
if (element instanceof Person) {
return ((Person) element).getFirstName();
}
return super.getText(element);
}
}
public class SureNameLabelProvider extends ColumnLabelProvider {
public String getText(Object element) {
if (element instanceof Person) {
return ((Person) element).getName();
}
return super.getText(element);
}
}
public class PersonProposalProvider implements IContentProposalProvider {
private IContentProposal[] contentProposals;
private boolean filterProposals = false;
private List<Person> proposals;
public PersonProposalProvider(List<Person> proposals) {
super();
this.proposals = proposals;
}
public IContentProposal[] getProposals(String contents, int position) {
if (filterProposals) {
ArrayList list = new ArrayList();
for (Person p : proposals) {
if (p.getFirstName().length() >= contents.length()
&& p.getFirstName().substring(0, contents.length())
.equalsIgnoreCase(contents)) {
list.add(makeContentProposal(p));
}
}
return (IContentProposal[]) list
.toArray(new IContentProposal[list.size()]);
}
if (contentProposals == null) {
contentProposals = new IContentProposal[proposals.size()];
for (int i = 0; i < proposals.size(); i++) {
contentProposals[i] = makeContentProposal(proposals.get(i));
}
}
return contentProposals;
}
public void setProposals(List<Person> items) {
this.proposals = items;
contentProposals = null;
}
public void setFiltering(boolean filterProposals) {
this.filterProposals = filterProposals;
contentProposals = null;
}
private IContentProposal makeContentProposal(final Person proposal) {
return new IContentProposal() {
public String getContent() {
return proposal.getFirstName();
}
public String getDescription() {
return null;
}
public String getLabel() {
return proposal.getFirstName() + " - " + proposal.getName();
}
public int getCursorPosition() {
return proposal.firstName.length();
}
};
}
}
private static Shell shell;
private CommiterList commiterList;
private ArrayList<Person> model;
public TestSnippet(Shell shell) {
commiterList = new CommiterList();
model = createModel();
final Table table = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
final TableViewer v = new TableViewer(table);
v.getTable().setLinesVisible(true);
v.setContentProvider(new ArrayContentProvider());
TableViewerColumn column = new TableViewerColumn(v, SWT.NONE);
column.getColumn().setWidth(200);
column.setLabelProvider(new FirstNameLabelProvider());
column.setEditingSupport(new MyEditingSupport(v));
column.setLabelProvider(new FirstNameLabelProvider());
TableViewerColumn columnName = new TableViewerColumn(v, SWT.NONE);
columnName.getColumn().setWidth(200);
columnName.setLabelProvider(new SureNameLabelProvider());
v.setInput(model);
}
private ArrayList<Person> createModel() {
ArrayList<Person> result = new ArrayList<Person>();
result.add(commiterList.getPeople().get(0));
return result;
}
public static void main(String[] args) {
Display display = new Display();
shell = new Shell(display);
shell.setLayout(new FillLayout());
new TestSnippet(shell);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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--------------020503070603090709070006--
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|
| Re: [content assist] Problem with ContentAssist at TextCellEditor [message #9170 is a reply to message #9146] |
Mon, 25 May 2009 14:49  |
| Eclipse User |
|
|
|
Hi,
The problem is that the TextCellEditor has a focus listener attached
which means that the editor is closed.
Take a look at [1] and test if this works for you.
Tom
[1] http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.jface.s nippets/Eclipse%20JFace%20Snippets/org/eclipse/jface/snippet s/viewers/Snippet060TextCellEditorWithContentProposal.java?v iew=markup
Heiko Ahlig schrieb:
> Hi,
> I try to add a content assist system on my TextCellEditors in a Table
> with filtering and so on.
> It works fine if I use the cursor and enter keys but if I select an
> entry from the proposallist with the mouse it dosen't work.
>
> Thanks in advance for tips and best regards,
>
> Heiko
>
> PS: for this snippet I use Eclipse 3.5RC2 and Java 1.6 on Vista.
>
> Here are my code snippet to demonstrate my problem:
>
> package de.nacorswelt.contentassist;
>
> import java.beans.PropertyChangeListener;
> import java.beans.PropertyChangeSupport;
> import java.util.ArrayList;
> import java.util.LinkedList;
> import java.util.List;
>
> import org.eclipse.jface.bindings.keys.KeyStroke;
> import org.eclipse.jface.dialogs.MessageDialog;
> import org.eclipse.jface.fieldassist.ContentProposalAdapter;
> import org.eclipse.jface.fieldassist.ControlDecoration;
> import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
> import org.eclipse.jface.fieldassist.IContentProposal;
> import org.eclipse.jface.fieldassist.IContentProposalListener;
> import org.eclipse.jface.fieldassist.IContentProposalListener2;
> import org.eclipse.jface.fieldassist.IContentProposalProvider;
> import org.eclipse.jface.fieldassist.TextContentAdapter;
> import org.eclipse.jface.viewers.ArrayContentProvider;
> import org.eclipse.jface.viewers.CellEditor;
> import org.eclipse.jface.viewers.ColumnLabelProvider;
> import org.eclipse.jface.viewers.EditingSupport;
> import org.eclipse.jface.viewers.TableViewer;
> import org.eclipse.jface.viewers.TableViewerColumn;
> import org.eclipse.jface.viewers.TextCellEditor;
> import org.eclipse.swt.SWT;
> import org.eclipse.swt.graphics.Image;
> import org.eclipse.swt.layout.FillLayout;
> import org.eclipse.swt.widgets.Display;
> import org.eclipse.swt.widgets.Shell;
> import org.eclipse.swt.widgets.Table;
>
> public class TestSnippet {
>
> public abstract class AbstractModelObject {
> private PropertyChangeSupport propertyChangeSupport = new
> PropertyChangeSupport(
> this);
>
> public void addPropertyChangeListener(PropertyChangeListener
> listener) {
> propertyChangeSupport.addPropertyChangeListener(listener);
> }
>
> public void addPropertyChangel_istener(String propertyName,
> PropertyChangeListener listener) {
> propertyChangeSupport.addPropertyChangeListener(propertyName ,
> listener);
> }
>
> public void removePropertyChangeListener(PropertyChangeListener
> listener) {
> propertyChangeSupport.removePropertyChangeListener(listener) ;
> }
>
> public void removePropertyChangeListener(String propertyName,
> PropertyChangeListener listener) {
>
> propertyChangeSupport.removePropertyChangeListener(propertyN ame,
> listener);
> }
>
> protected void firePropertyChange(String propertyName, Object
> oldValue,
> Object newValue) {
> propertyChangeSupport.firePropertyChange(propertyName,
> oldValue,
> newValue);
> }
> }
>
> public class Person extends AbstractModelObject {
> String name;
> String firstName;
>
> public Person(String firstName, String name) {
> this.name = name;
> this.firstName = firstName;
> }
>
> public String getName() {
> return name;
> }
>
> public void setName(String name) {
> firePropertyChange("name", this.name, this.name = name);
> }
>
> public String getFirstName() {
> return firstName;
> }
>
> public void setFirstName(String firstName) {
> firePropertyChange("firstName", this.firstName,
> this.firstName = firstName);
> }
> }
>
> public class CommiterList {
> private List<Person> people = new LinkedList<Person>();
> {
> people.add(new Person("Dave", "Orme"));
> people.add(new Person("David", "Orme"));
> people.add(new Person("Gili", "Mendel"));
> people.add(new Person("Ginger", "Mendel"));
> people.add(new Person("Joe", "Winchester"));
> people.add(new Person("Boris", "Bokowski"));
> people.add(new Person("Brad", "Reynolds"));
> people.add(new Person("Matthew", "Hall"));
> people.add(new Person("Mobi", "Hall"));
> }
>
> public List<Person> getPeople() {
> return people;
> }
> }
>
> public class MyEditingSupport extends EditingSupport {
> private CellEditor textEditor;
> private Image contentHelpImage;
>
> public MyEditingSupport(TableViewer viewer) {
> super(viewer);
> textEditor = new TextCellEditor(viewer.getTable());
> if (contentHelpImage == null)
> contentHelpImage = FieldDecorationRegistry.getDefault()
> .getFieldDecoration(
>
> FieldDecorationRegistry.DEC_CONTENT_PROPOSAL)
> .getImage();
> PersonProposalProvider proposalProvider = new
> PersonProposalProvider(
> commiterList.getPeople());
> proposalProvider.setFiltering(true);
> ContentProposalAdapter adapter = new ContentProposalAdapter(
> textEditor.getControl(), new TextContentAdapter(),
> proposalProvider, KeyStroke.getInstance(SWT.CTRL,
> 32), null);
> adapter.setPropagateKeys(true);
> adapter
>
> .setProposalAcceptanceStyle(ContentProposalAdapter.PROPOSAL_ REPLACE);
> ControlDecoration dec = new ControlDecoration(textEditor
> .getControl(), SWT.BOTTOM | SWT.RIGHT);
> dec.setImage(contentHelpImage);
> dec.setDescriptionText("Use VCtrl+SpaceV to open List");
> }
>
> protected boolean canEdit(Object element) {
> if (element != null) {
> return true;
> }
> return false;
> }
>
> protected CellEditor getCellEditor(Object element) {
> return textEditor;
> }
>
> protected Object getValue(Object element) {
> if (element instanceof Person) {
> return ((Person) element).getFirstName();
> }
> return element.toString();
> }
>
> protected void setValue(Object element, Object value) {
> Person _newPerson = null;
> if (value != null) {
> for (Person p : commiterList.getPeople()) {
> if (p.getFirstName().equals(value)) {
> _newPerson = p;
> break;
> }
> }
> }
> if (_newPerson != null) {
> int oldElementlndex = model.indexOf(element);
> model.remove(oldElementlndex);
> model.add(oldElementlndex, _newPerson);
> MessageDialog.openInformation(shell, "successful",
> "Element ist set to: " + _newPerson.getFirstName() + " " +
> _newPerson.getName());
> getViewer().refresh(true);
> } else {
> MessageDialog.openError(shell, "Error", "The given value
> are:"
> + value);
> }
> }
> }
>
> public class FirstNameLabelProvider extends ColumnLabelProvider {
> public String getText(Object element) {
> if (element instanceof Person) {
> return ((Person) element).getFirstName();
> }
> return super.getText(element);
> }
> }
>
> public class SureNameLabelProvider extends ColumnLabelProvider {
> public String getText(Object element) {
> if (element instanceof Person) {
> return ((Person) element).getName();
> }
> return super.getText(element);
> }
> }
>
> public class PersonProposalProvider implements
> IContentProposalProvider {
> private IContentProposal[] contentProposals;
> private boolean filterProposals = false;
> private List<Person> proposals;
>
> public PersonProposalProvider(List<Person> proposals) {
> super();
> this.proposals = proposals;
> }
>
> public IContentProposal[] getProposals(String contents, int
> position) {
> if (filterProposals) {
> ArrayList list = new ArrayList();
> for (Person p : proposals) {
> if (p.getFirstName().length() >= contents.length()
> && p.getFirstName().substring(0,
> contents.length())
> .equalsIgnoreCase(contents)) {
> list.add(makeContentProposal(p));
> }
> }
> return (IContentProposal[]) list
> .toArray(new IContentProposal[list.size()]);
> }
> if (contentProposals == null) {
> contentProposals = new IContentProposal[proposals.size()];
> for (int i = 0; i < proposals.size(); i++) {
> contentProposals[i] =
> makeContentProposal(proposals.get(i));
> }
> }
> return contentProposals;
> }
>
> public void setProposals(List<Person> items) {
> this.proposals = items;
> contentProposals = null;
> }
>
> public void setFiltering(boolean filterProposals) {
> this.filterProposals = filterProposals;
> contentProposals = null;
> }
>
> private IContentProposal makeContentProposal(final Person
> proposal) {
> return new IContentProposal() {
> public String getContent() {
> return proposal.getFirstName();
> }
>
> public String getDescription() {
> return null;
> }
>
> public String getLabel() {
> return proposal.getFirstName() + " - " +
> proposal.getName();
> }
>
> public int getCursorPosition() {
> return proposal.firstName.length();
> }
> };
> }
> }
>
> private static Shell shell;
> private CommiterList commiterList;
> private ArrayList<Person> model;
>
> public TestSnippet(Shell shell) {
> commiterList = new CommiterList();
> model = createModel();
> final Table table = new Table(shell, SWT.BORDER |
> SWT.FULL_SELECTION);
> final TableViewer v = new TableViewer(table);
> v.getTable().setLinesVisible(true);
> v.setContentProvider(new ArrayContentProvider());
>
> TableViewerColumn column = new TableViewerColumn(v, SWT.NONE);
> column.getColumn().setWidth(200);
> column.setLabelProvider(new FirstNameLabelProvider());
> column.setEditingSupport(new MyEditingSupport(v));
>
> column.setLabelProvider(new FirstNameLabelProvider());
> TableViewerColumn columnName = new TableViewerColumn(v, SWT.NONE);
> columnName.getColumn().setWidth(200);
> columnName.setLabelProvider(new SureNameLabelProvider());
>
> v.setInput(model);
> }
>
> private ArrayList<Person> createModel() {
> ArrayList<Person> result = new ArrayList<Person>();
> result.add(commiterList.getPeople().get(0));
> return result;
> }
>
> public static void main(String[] args) {
> Display display = new Display();
> shell = new Shell(display);
> shell.setLayout(new FillLayout());
> new TestSnippet(shell);
> shell.open();
>
> while (!shell.isDisposed()) {
> if (!display.readAndDispatch())
> display.sleep();
> }
>
> display.dispose();
>
> }
>
> }
>
>
>
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