7

FieldEditorPreferencePage 中的布局设置存在以下问题。
我的代码是这样的：

public void createFieldEditors () {
  Group pv = new group(getfieldEditorParent(), SWT.SHADOW_OUT);
  Group of = new group(getfieldEditorParent(), SWT.SHADOW_OUT);
  pv.setText(“pv”);
  of.setText(“of”);
  GridLayout layout = new GridLayout(2,false);
  pv.setLayout(layout);
  of.setLayout(layout);
  addField(new StringFieldEditor(“PreferenceStore name”,“Text:”, pv);
  addField(new StringFieldEditor(“PreferenceStore name”,“Text:”, pv);
  addField(new StringFieldEditor(“PreferenceStore name”,“Text:”, of);
  addField(new StringFieldEditor(“PreferenceStore name”,“Text:”, of);
  and so on.
 }

问题是它不适用于 GridLayout。
StringFieldEditors 不是并行的。列数始终为 1。此外，当我尝试更改组中 StringFieldEditors 的大小时，它也不起作用。

有人有什么想法吗？
谢谢。

4

5 回答 5

7

问题是，当您使用 时FieldEditorPreferencePage，您只能使用FieldEditor子类作为组件。这是文档中的一个片段：

FieldEditorPreferencePage 实现了一个页面，该页面使用这些字段编辑器在页面上显示和存储首选项值。FieldEditorPreferencePage 子类不是创建 SWT 控件来填充其内容，而是创建字段编辑器来显示内容。 页面上的所有字段都必须实现为字段编辑器。

这意味着您有两种选择如何实现您想要的：

  1. 实现您自己的 子类FieldEditor，它将代表 Group 小部件。
  2. 不要扩展FieldEditorPreferencePage，而只是 a PreferencePage。然后你必须实现createContents方法而不是createFieldEditors. 您还必须管理属性的加载和保存。

如果您想提供一些复杂的布局，我认为第二种方法可能更容易。您可以在这里找到更多信息

于 2009-03-31T14:24:59.357 回答
3

另一个（简单的）解决方法：您还可以创建新的 Composites 来创建更多列。问题是这些 FieldEditor 与它们的父级通信并弄乱了您的布局。因此，通过创建一个“空”复合，他们可以随心所欲地进行交流:)

someGroup = new Group(..., SWT.NONE);
someGroup .setLayout(new GridLayout(16, false));

Composite myC1= new Composite(someGroup,SWT.NONE);
addField(new BooleanFieldEditor(...,C1);

Composite myC2= new Composite(someGroup,SWT.NONE);
addField(new BooleanFieldEditor(...,C2);
于 2013-11-20T11:04:36.880 回答
1

FieldEditorPreferencePage关于（GRID风格）需要了解的两件事：

  1. 字段编辑器父级的布局始终设置GridLayout为“自定义”组件，例如Groups;
  2. 布局中的列数根据任何字段编辑器中的最大组件数进行调整（在StringFieldEditor).

在上面的例子中，布局数据Groups应该考虑到这一点：

GridDataFactory.defaultsFor(pv).grab(true, false).span(2, 1).applyTo(pv);
GridDataFactory.defaultsFor(of).grab(true, false).span(2, 1).applyTo(of);
于 2011-11-14T07:25:17.537 回答
1

我实现了 Group-FieldEditor，它可以包含其他 FieldEditor 并将它们布置为一个组。


import java.util.Collection;

import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Group;

/**
 * Class is intended to create a Group Widgets, inside of the {@link FieldEditorPreferencePage}
 * objects.
 * This class should be used as following:
 * 
    
 * 
  • use the {@link #getFieldEditorParent()} to as a parent, while creating new Field Editors.
 * 
  • use {@link #setFieldEditors(Collection)} to add the collection of FieldEditors to the
 * {@link GroupFieldEditor}.
 * 

 *
 * @author alf
 *
 */
public class GroupFieldEditor extends FieldEditor {

    private String name;
    private Collection members;
    private int numcolumns;
    private Group group;
    private Composite parent;


    /**
     * The gap outside, between the group-frame and the widgets around the group
     */
    private static final int GROUP_PADDING = 5; // px

    /**
     * The gap inside, between the group-frame and the content
     */
    private static final int GROUP_VERTICAL_MARGIN = 5; // px



    /**
     * The inside-distance creates a new boolean field editor
     */
    protected GroupFieldEditor() {
    }

    /**
     * Creates a Group of {@link FieldEditor} objects
     *
     * @param name
     *            - name
     * @param fieldEditorParent
     *            - parent
     */
    public GroupFieldEditor(String name, Composite fieldEditorParent) {
        this.name = name;

        // the parent is a Composite, which is contained inside of the preference page. Initially it
        // does not have any layout.
        this.parent = fieldEditorParent;
        FillLayout fillLayout = new FillLayout();
        fillLayout.marginHeight = GROUP_VERTICAL_MARGIN;
        this.parent.setLayout(fillLayout);

        this.group = new Group(parent, SWT.DEFAULT);
        this.group.setText(this.name);
    }

    /**
     * The parent for all the FieldEditors inside of this Group.
     *
     * @return - the parent
     */
    public Composite getFieldEditorParent() {
        return group;
    }

    /**
     * Sets the FieldeditorChildren for this {@link GroupFieldEditor}
     * 
     * @param membersParam
     */
    public void setFieldEditors(Collection membersParam) {
        this.members = membersParam;
        doFillIntoGrid(getFieldEditorParent(), numcolumns);
    }

    /*
     * (non-Javadoc) Method declared on FieldEditor.
     */
    @Override
    protected void adjustForNumColumns(int numColumns) {
        this.numcolumns = numColumns;
    }

    /*
     * (non-Javadoc) Method declared on FieldEditor.
     */
    @Override
    protected void doFillIntoGrid(Composite parentParam, int numColumns) {

        GridLayout gridLayout = new GridLayout();
        gridLayout.marginLeft = GROUP_PADDING;
        gridLayout.marginRight = GROUP_PADDING;
        gridLayout.marginTop = GROUP_PADDING;
        gridLayout.marginBottom = GROUP_PADDING;
        this.group.setLayout(gridLayout);

        this.parent.layout();
        this.parent.redraw();

        if (members != null) {
            for (FieldEditor editor : members) {
                editor.fillIntoGrid(getFieldEditorParent(), 1);
            }
        }
    }


    /*
     * (non-Javadoc) Method declared on FieldEditor. Loads the value from the
     * preference store and sets it to the check box.
     */
    @Override
    protected void doLoad() {
        if (members != null) {
            for (FieldEditor editor : members) {
                editor.load();
            }
        }
    }

    /*
     * (non-Javadoc) Method declared on FieldEditor. Loads the default value
     * from the preference store and sets it to the check box.
     */
    @Override
    protected void doLoadDefault() {
        if (members != null) {
            for (FieldEditor editor : members) {
                editor.loadDefault();
            }
        }
    }


    /*
     * (non-Javadoc) Method declared on FieldEditor.
     */
    @Override
    protected void doStore() {
        if (members != null) {
            for (FieldEditor editor : members) {
                editor.store();
            }
        }
    }

    @Override
    public void store() {
        super.store();
        doStore();
    }



    /*
     * (non-Javadoc) Method declared on FieldEditor.
     */
    @Override
    public int getNumberOfControls() {
        return 1;
    }

    /*
     * (non-Javadoc) Method declared on FieldEditor.
     */
    @Override
    public void setFocus() {
        if (members != null && !members.isEmpty()) {
            members.iterator().next().setFocus();
        }
    }


    /*
     * @see FieldEditor.setEnabled
     */
    @Override
    public void setEnabled(boolean enabled, Composite parentParam) {
        if (members != null) {
            for (FieldEditor editor : members) {
                editor.setEnabled(enabled, parentParam);
            }
        }
    }

    @Override
    public void setPreferenceStore(IPreferenceStore store) {
        super.setPreferenceStore(store);
        if (members != null) {
            for (FieldEditor editor : members) {
                editor.setPreferenceStore(store);
            }
        }
    }


}
于 2012-10-17T07:36:39.010 回答
0

另一种解决方法：

使用标签来分隔字段组。下面创建一个垂直行分隔符并将文本直接放在其下方：

new Label(getFieldEditorParent(), SWT.SEPARATOR | SWT.HORIZONTAL)
        .setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));
new Label(getFieldEditorParent(), SWT.NONE).setText("My Group Title");
于 2018-05-17T09:32:47.003 回答