在部分展开后避免树大小调整
问题描述:
我有一个问题,我现在无法解决我自己。在部分展开后避免树大小调整
我有一个RCP ViewPage包含两个部分。这些部分位于SashForm中,以便用户能够调整扩展部分的大小。在底部有一个树,初始化后它是空的。通过用户交互(即删除过滤器),树会被填充并且其中包含大量数据。如果用户现在折叠底部视图并再次展开,则树会重新调整大小,从而导致我的窗体中出现滚动条。我想要的是树形视图中的滚动条。
下面是这个视图是如何打造:
- ScrolledForm
- Form Body
- Sash
- Section 1
- Composite
- Some View
- Section 2
- Composite
- Tree
我希望你明白我想要的目的。
更新:这里有一些源代码来玩。它使用表而不是树,但产生相同的问题。
public class MyPersonPageEditor extends FormPage {
public static final String ID = "some.ID";
TableViewer tableViewer;
public MyPersonPageEditor(FormEditor editor) {
super(editor, ID, "Some Title");
}
@Override
protected void createFormContent(IManagedForm managedForm) {
FormToolkit toolkit = managedForm.getToolkit();
ScrolledForm form = managedForm.getForm();
Composite formBody = form.getBody();
formBody.setLayout(new GridLayout());
form.setText("Some Title");
toolkit.decorateFormHeading(form.getForm());
SashForm sfForm = new SashForm(formBody, SWT.VERTICAL);
sfForm.setLayout(new GridLayout());
sfForm.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
Section topSection = new Section(sfForm, Section.TITLE_BAR | Section.EXPANDED | Section.TWISTIE);
topSection.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
topSection.setText("Section 1 Title");
Composite topSectionComposite = toolkit.createComposite(topSection);
topSectionComposite.setLayout(new GridLayout());
toolkit.createLabel(topSectionComposite, "Just some content. Doesn't need to be much");
Button btn = toolkit.createButton(topSectionComposite, "Create Table Content", SWT.PUSH);
btn.addSelectionListener(new SelectionListener() {
@Override
public void widgetSelected(SelectionEvent e) {
for (int i = 0 ; i < 10 ; i++) {
tableViewer.add("Element " + i);
}
}
@Override
public void widgetDefaultSelected(SelectionEvent e) {
}
});
topSection.setClient(topSectionComposite);
Section bottomSection = new Section(sfForm, Section.TITLE_BAR | Section.EXPANDED | Section.TWISTIE);
bottomSection.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
bottomSection.setText("Section 2 Title");
Composite bottomSectionComposite = toolkit.createComposite(bottomSection);
bottomSectionComposite.setLayout(new GridLayout());
bottomSectionComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
bottomSection.setClient(bottomSectionComposite);
Table table = toolkit.createTable(bottomSectionComposite, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION |
SWT.V_SCROLL | SWT.H_SCROLL | SWT.RESIZE);
table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
table.setHeaderVisible(true);
tableViewer = new TableViewer(table);
tableViewer.add("New Element");
new TableColumn(table, SWT.LEFT).setText("Spalte 1");
TableLayout layoutDefault = new TableLayout();
layoutDefault.addColumnData(new ColumnWeightData(1));
table.setLayout(layoutDefault);
form.reflow(true);
}
}
如果您在开始后单击按钮,该表看起来就像左图。在折叠并展开第二部分后,它看起来像是正确的。
答
- 确保该树具有SWT.H_SCROLL风格(如果我没记错),使得其具有最小尺寸(例如使用网格布局和的GridData设置到了minHeight X或与TableWrapLayout和资料表身高提示为X) - 如果您无法使其正常工作,请告诉我,我会尝试制作代码;此外,在布局的画面将是巨大的
答
这里是工作的代码:你只需要调整的树/表的大小,并确保它不会跨越的垂直空间跨度:
public void createPartControl(Composite parent) {
FormToolkit toolkit = new FormToolkit(parent.getDisplay());
final ScrolledForm form = toolkit.createScrolledForm(parent);
Composite formBody = form.getBody();
formBody.setLayout(new GridLayout());
form.setText("Some Title");
toolkit.decorateFormHeading(form.getForm());
SashForm sfForm = new SashForm(formBody, SWT.VERTICAL);
sfForm.setLayout(new GridLayout());
sfForm.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
//top section
Section topSection = new Section(sfForm, Section.TITLE_BAR | Section.EXPANDED | Section.TWISTIE);
topSection.setLayout(new GridLayout());
topSection.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
topSection.setText("Section 1 Title");
Composite topSectionComposite = toolkit.createComposite(topSection);
topSectionComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
topSectionComposite.setLayout(new TableWrapLayout());
toolkit.createLabel(topSectionComposite, "Just some content. Doesn't need to be much");
Button btn = toolkit.createButton(topSectionComposite, "Create Table Content", SWT.PUSH);
btn.addSelectionListener(new SelectionListener() {
@Override
public void widgetSelected(SelectionEvent e) {
for (int i = 0 ; i < 10 ; i++) {
tableViewer.add("Element " + i);
}
form.reflow(true);
}
@Override
public void widgetDefaultSelected(SelectionEvent e) {
}
});
topSection.setClient(topSectionComposite);
//bottom section
Section bottomSection = new Section(sfForm, Section.TITLE_BAR | Section.EXPANDED | Section.TWISTIE);
bottomSection.setLayout(new GridLayout());
bottomSection.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
bottomSection.setText("Section 2 Title");
Composite bottomSectionComposite = toolkit.createComposite(bottomSection);
bottomSectionComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
bottomSectionComposite.setLayout(new TableWrapLayout());
Table table = toolkit.createTable(bottomSectionComposite, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION |
SWT.V_SCROLL | SWT.H_SCROLL | SWT.RESIZE);
TableWrapData ttd222 = new TableWrapData(TableWrapData.FILL_GRAB, TableWrapData.FILL_GRAB);
ttd222.maxHeight =200;
table.setLayoutData(ttd222);
table.setHeaderVisible(true);
tableViewer = new TableViewer(table);
tableViewer.add("New Element");
new TableColumn(table, SWT.LEFT).setText("Spalte 1");
TableLayout layoutDefault = new TableLayout();
layoutDefault.addColumnData(new ColumnWeightData(1));
table.setLayout(layoutDefault);
bottomSection.setClient(bottomSectionComposite);
form.reflow(true);
}
我编辑了我的问题,并提供了一些源代码来玩和一些截图 – 2013-03-13 15:39:45