design/designer-base/src/main/java/com/fr/design/actions/TemplateComponentAction.java

package com.fr.design.actions;


import com.fr.design.designer.TargetComponent;
import com.fr.design.mainframe.DesignerContext;

public abstract class TemplateComponentAction<T extends TargetComponent> extends UndoableAction implements TemplateComponentActionInterface<T> {
    private T t;

    protected TemplateComponentAction() {
    }

    protected TemplateComponentAction(T t) {
        this.t = t;
    }

    protected void setEditingComponent(T t) {
        this.t = t;
    }

    @Override
    public T getEditingComponent() {
        return t;
    }

    @Override
    public void prepare4Undo() {
        DesignerContext.enableRefreshOnTargetModified();
        this.getEditingComponent().fireTargetModified();
        T component = getEditingComponent();
        if (component == null) {
            return;
        }

        component.requestFocus();
    }

    /**
     * update enable
     * TODO ALEX_SEP 这个方法的名字只是简单的叫update,太不明了了
     */
    @Override
    public void update() {
        this.setEnabled(this.getEditingComponent() != null);
    }
}