org.openremote.manager.client.widget.AbstractAppPanel.java Source code

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Here is the source code for org.openremote.manager.client.widget.AbstractAppPanel.java

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/*
 * Copyright 2016, OpenRemote Inc.
 *
 * See the CONTRIBUTORS.txt file in the distribution for a
 * full listing of individual contributors.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.openremote.manager.client.widget;

import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.UIObject;

public abstract class AbstractAppPanel implements AppPanel {

    final protected PopupPanel popupPanel;

    protected UIObject target;
    protected int marginTop;
    protected int marginRight;
    protected int marginBottom;
    protected int marginLeft;
    protected UIObject bottomRightTarget;
    protected UIObject topLeftTarget;

    public AbstractAppPanel(UiBinder<PopupPanel, AbstractAppPanel> binder) {
        this.popupPanel = binder.createAndBindUi(this);
        popupPanel.setAutoHideOnHistoryEventsEnabled(true);

        popupPanel.setGlassStyleName("or-PopupPanelGlass");

        popupPanel.addCloseHandler(event -> {
            if (target != null) {
                popupPanel.removeAutoHidePartner(target.getElement());
                target = null;
            }
        });

        Window.addResizeHandler(event -> {
            if (isShowing()) {
                if (target != null) {
                    popupPanel.showRelativeTo(target);
                } else if (bottomRightTarget != null) {
                    showBottomRightOf(bottomRightTarget, marginRight, marginBottom);
                } else if (topLeftTarget != null) {
                    showTopLeftOf(topLeftTarget, marginTop, marginLeft);
                }
            }
        });
    }

    public PopupPanel getPopupPanel() {
        return popupPanel;
    }

    @Override
    public void setAutoHide(boolean autoHide) {
        popupPanel.setAutoHideEnabled(autoHide);
    }

    @Override
    public void setModal(boolean modal) {
        getPopupPanel().setGlassEnabled(modal);
    }

    @Override
    public boolean isShowing() {
        return popupPanel.isShowing();
    }

    @Override
    public void show() {
        popupPanel.show();
    }

    @Override
    public void showRelativeTo(UIObject target) {
        popupPanel.showRelativeTo(target);
        popupPanel.addAutoHidePartner(target.getElement());
        this.target = target;
    }

    public void showBottomRightOf(UIObject bottomRightTarget, int marginRight, int marginBottom) {
        this.bottomRightTarget = bottomRightTarget;
        this.marginRight = marginRight;
        this.marginBottom = marginBottom;
        getPopupPanel().setPopupPositionAndShow((offsetWidth, offsetHeight) -> {
            int bottom = bottomRightTarget.getAbsoluteTop() + bottomRightTarget.getOffsetHeight();
            int right = bottomRightTarget.getAbsoluteLeft() + bottomRightTarget.getOffsetWidth();
            int top = bottom - offsetHeight - marginBottom;
            int left = right - offsetWidth - marginRight;
            getPopupPanel().setPopupPosition(left, top);
        });
    }

    public void showTopLeftOf(UIObject topLeftTarget, int marginTop, int marginLeft) {
        this.topLeftTarget = topLeftTarget;
        this.marginTop = marginTop;
        this.marginLeft = marginLeft;
        getPopupPanel().setPopupPositionAndShow((offsetWidth, offsetHeight) -> {
            int top = topLeftTarget.getAbsoluteTop() + marginTop;
            int left = topLeftTarget.getAbsoluteLeft() + marginLeft;
            getPopupPanel().setPopupPosition(left, top);
        });
    }

    @Override
    public void toggle() {
        if (isShowing()) {
            hide();
        } else {
            show();
        }
    }

    @Override
    public void toggleRelativeTo(UIObject target) {
        if (isShowing()) {
            hide();
        } else {
            showRelativeTo(target);
        }
    }

    @Override
    public void hide() {
        popupPanel.hide();
    }

    @Override
    public void showCenter() {
        popupPanel.center();
    }
}