Eclipse项目属性/首选项页面：如何在项目属性窗口（Eclipse）中找到打开首选项页面的事件

Question

我想在页面打开时在首选项页面上初始化一些字段值，并且我希望每次在Project属性window（Eclipse）中打开页面时都使用它。

Answer 1

Try to implement a property change listener.

This may help-

public class MyFieldEditorPreferencePage extends PropertyPage {
private Text text;

public void initialize() {
    // TODO Auto-generated constructor stub
    IProject project = (IProject) getElement().getAdapter(IProject.class);

    final IPreferenceStore store = Activator
            .getImpaktPreferenceStore(project);

    store.addPropertyChangeListener(new IPropertyChangeListener() {

        @Override
        public void propertyChange(
                org.eclipse.jface.util.PropertyChangeEvent event) {
            // TODO Auto-generated method stub

            // TODO Auto-generated method stub

            if (text != null && !text.isDisposed())
                text.setText(store.getString("key"));

        }
    });

    setPreferenceStore(store);

}

@Override
protected Control createContents(Composite parent) {
    // TODO Auto-generated method stub

    initialize();
    GridLayout layout = new GridLayout(1, false);
    parent.setLayout(layout);
    GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true);

    Composite container = new Composite(parent, 0);
    container.setLayoutData(gridData);

    GridLayout containerLayout = new GridLayout(2, false);
    container.setLayout(containerLayout);
    Label lbl = new Label(container, 0);
    lbl.setText("Locale");

    text = new Text(container, SWT.BORDER);
    text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));

    text.setText(getPreferenceStore().getString("impakt.properties.locale"));

    return parent;
}

}

Answer 2

org.eclipse.jface.preference.PreferencePage has a setPreferenceStore method that you should call in your preference page constructor. The preference store specified often comes from the plugin activator, like this example from the compare plugin preferences:

setPreferenceStore(CompareUIPlugin.getDefault().getPreferenceStore());

There is a getPreferenceStore() method to call to access this store.

Override public void setVisible(boolean visible) if you want to be notified each time the page becomes visible.