Eclipse插件开发常用功能（以后会继续加入）

1、选择java类的Dialog的使用

java 代码

final IJavaSearchScope searchScope = SearchEngine
                .createWorkspaceScope();
        addButton.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                TypeSelectionDialog2 dialog = new TypeSelectionDialog2(
                        getShell(), false,
                        new ProgressMonitorDialog(getShell()), searchScope,
                        IJavaSearchConstants.TYPE);
                dialog.setMessage("Select an Entity bean"); //$NON-NLS-1$
                dialog.setBlockOnOpen(true);
                dialog.setTitle("Type Selection");
                if (Dialog.OK == dialog.open()) {
                    IType obj = (IType) dialog.getFirstResult();
                    String className = obj.getResource().getName();
                    String packageName = obj.getPackageFragment()
                            .getElementName();
                    list.add(packageName + "."+ className);
                }
            }
        });

2、包选择的Dialog的使用

java 代码

browseButton.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                super.widgetSelected(e);
                IJavaProject javaProject = JavaCore.create(getProject(obj));
                SelectionDialog dialog = null;
                try {
                    dialog = JavaUI
                            .createPackageDialog(
                                    getShell(),
                                    javaProject,
IJavaElementSearchConstants.CONSIDER_REQUIRED_PROJECTS);
                    dialog.setTitle("Package Selection");
                    dialog.setMessage("Choose a folder");
                } catch (JavaModelException e1) {
                    // ExceptionHandler.handleExceptionAndAbort(e1);
                }
                if (dialog.open() != Window.OK) {
                    return;
                }
                IPackageFragment pck = (IPackageFragment) dialog.getResult()[0];
                if (pck != null) {
                    packageTxt.setText(pck.getElementName());
                }
            }
        });

 

 3、自定义带有多选框的Dialog的创建及其使用
创建：

java 代码

public class CheckboxSelectionDialog extends Dialog {

    class ContentProvider implements IStructuredContentProvider {
        public Object[] getElements(Object inputElement) {
            return new Object[] {};
        }

        public void dispose() {
        }

        public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
        }
    }

    private Table table;

    private CheckboxTableViewer ctv;

    private TableViewer tv;

    private java.util.List initialSelections;

    private String[] result;

    private String title;

    private String label;

    /**
     * Create the dialog
     *
     * @param parentShell
     */
    public CheckboxSelectionDialog (Shell parentShell,
            java.util.List initialSelections, String title, String label) {
        super(parentShell);
        this.initialSelections = initialSelections;
        this.title = title;
        this.label = label;
    }

    /**
     * Create contents of the dialog
     *
     * @param parent
     */
    protected Control createDialogArea(Composite parent) {
        Composite container = (Composite) super.createDialogArea(parent);
        final GridLayout gridLayout = new GridLayout();
        container.setLayout(gridLayout);

        final Label selectLabel = new Label(container, SWT.NONE);
        selectLabel.setLayoutData(new GridData());
        // selectLabel.setText("Select the ejb container.");
        selectLabel.setText(label);

        tv = new TableViewer(container, SWT.CHECK | SWT.MULTI | SWT.BORDER
                | SWT.FULL_SELECTION);
        // ctv = new CheckboxTableViewer(tv.getTable());
        tv.setContentProvider(new ContentProvider());
        tv.setInput(new Object());
        table = tv.getTable();
        table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        tv.add(initialSelections.toArray());
        //
        return container;
    }

    /**
     * Create contents of the button bar
     *
     * @param parent
     */
    protected void createButtonsForButtonBar(Composite parent) {
        final Button button = createButton(parent, IDialogConstants.OK_ID,
                IDialogConstants.OK_LABEL, true);
        if (initialSelections.size() <= 0)
            button.setEnabled(false);
        createButton(parent, IDialogConstants.CANCEL_ID,
                IDialogConstants.CANCEL_LABEL, false);
    }

    /**
     * Return the initial size of the dialog
     */
    protected Point getInitialSize() {
        return new Point(300, 375);
    }

    public String[] getResult() {
        return this.result;
    }

    protected void configureShell(Shell newShell) {
        super.configureShell(newShell);
        // newShell.setText("Select EJB Module");
        newShell.setText(title);
    }

    protected void buttonPressed(int buttonId) {
        if (buttonId == IDialogConstants.OK_ID) {
            TableItem[] children = table.getItems();
            ArrayList v = new ArrayList(children.length);
            for (int i = 0; i < children.length; i++) {
                TableItem item = children[i];
                if (item.getChecked()) {
                    v.add(item.getData());
                }
            }
            int size = v.size();
            result = new String[size];
            for (int i = 0; i < v.size(); i++)
                result[i] = v.get(i).toString();
        }
        super.buttonPressed(buttonId);
    }

}

使用：

java 代码

List list = new ArrayList();
for (int i = 0; i < file.length; i++) {
            list.add(i);
}

CheckModuleSelectionDialog dialog = new CheckModuleSelectionDialog(
    ProjectUtil.getShell(), list, "Select a Project",
                "Select the Project container.");
if (dialog.open() == ContainerSelectionDialog.OK) {
    String[] result = dialog.getResult();
}