com.haulmont.cuba.web.gui.components.WebHtmlBoxLayout.java Source code

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Here is the source code for com.haulmont.cuba.web.gui.components.WebHtmlBoxLayout.java

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/*
 * Copyright (c) 2008-2016 Haulmont.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package com.haulmont.cuba.web.gui.components;

import com.haulmont.bali.util.Preconditions;
import com.haulmont.cuba.gui.ComponentsHelper;
import com.haulmont.cuba.gui.components.Component;
import com.haulmont.cuba.gui.components.Frame;
import com.haulmont.cuba.gui.components.HtmlBoxLayout;
import com.vaadin.ui.CustomLayout;

import javax.annotation.Nullable;
import java.util.*;

public class WebHtmlBoxLayout extends WebAbstractComponent<CustomLayout> implements HtmlBoxLayout {

    protected List<Component> ownComponents = new ArrayList<>();

    public WebHtmlBoxLayout() {
        component = new CustomLayout("");
    }

    @Override
    public String getTemplateName() {
        return component.getTemplateName();
    }

    @Override
    public void setTemplateName(String templateName) {
        component.setTemplateName(templateName);
    }

    @Override
    public String getTemplateContents() {
        return component.getTemplateContents();
    }

    @Override
    public void setTemplateContents(String templateContents) {
        component.setTemplateContents(templateContents);
    }

    @Override
    public void add(Component childComponent) {
        if (childComponent.getParent() != null && childComponent.getParent() != this) {
            throw new IllegalStateException("Component already has parent");
        }

        final com.vaadin.ui.Component vComponent = WebComponentsHelper.getComposition(childComponent);

        if (childComponent.getId() != null) {
            component.addComponent(vComponent, childComponent.getId());
        } else {
            component.addComponent(vComponent);
        }

        if (frame != null) {
            if (childComponent instanceof BelongToFrame && ((BelongToFrame) childComponent).getFrame() == null) {
                ((BelongToFrame) childComponent).setFrame(frame);
            } else {
                frame.registerComponent(childComponent);
            }
        }

        ownComponents.add(childComponent);

        childComponent.setParent(this);
    }

    @Override
    public void remove(Component childComponent) {
        if (childComponent.getId() != null) {
            component.removeComponent(childComponent.getId());
        } else {
            component.removeComponent(WebComponentsHelper.getComposition(childComponent));
        }
        ownComponents.remove(childComponent);

        childComponent.setParent(null);
    }

    @Override
    public void removeAll() {
        component.removeAllComponents();

        Component[] components = ownComponents.toArray(new Component[ownComponents.size()]);
        ownComponents.clear();

        for (Component childComponent : components) {
            childComponent.setParent(null);
        }
    }

    @Override
    public void setFrame(Frame frame) {
        super.setFrame(frame);

        if (frame != null) {
            for (Component childComponent : ownComponents) {
                if (childComponent instanceof BelongToFrame
                        && ((BelongToFrame) childComponent).getFrame() == null) {
                    ((BelongToFrame) childComponent).setFrame(frame);
                }
            }
        }
    }

    @Nullable
    @Override
    public Component getOwnComponent(String id) {
        Preconditions.checkNotNullArgument(id);

        return ownComponents.stream().filter(component -> Objects.equals(id, component.getId())).findFirst()
                .orElse(null);
    }

    @Nullable
    @Override
    public Component getComponent(String id) {
        return ComponentsHelper.getComponent(this, id);
    }

    @Override
    public Collection<Component> getOwnComponents() {
        return Collections.unmodifiableCollection(ownComponents);
    }

    @Override
    public Collection<Component> getComponents() {
        return ComponentsHelper.getComponents(this);
    }
}