org.cruxframework.crux.smartfaces.client.storyboard.StoryboardPanel.java Source code

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Here is the source code for org.cruxframework.crux.smartfaces.client.storyboard.StoryboardPanel.java

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/*
 * Copyright 2015 cruxframework.org.
 * 
 * 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 org.cruxframework.crux.smartfaces.client.storyboard;

import java.util.Iterator;
import java.util.NoSuchElementException;

import org.cruxframework.crux.core.client.event.SelectEvent;
import org.cruxframework.crux.core.client.event.SelectHandler;
import org.cruxframework.crux.core.client.utils.StringUtils;
import org.cruxframework.crux.smartfaces.client.panel.SelectablePanel;

import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HasHorizontalAlignment.HorizontalAlignmentConstant;
import com.google.gwt.user.client.ui.HasVerticalAlignment.VerticalAlignmentConstant;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.Widget;

/**
 * 
 * @author Thiago da Rosa de Bustamante
 */
abstract class StoryboardPanel extends Composite {
    private static final String STORYBOARD_ITEM_STYLE_NAME = "item";

    protected boolean fixedHeight = true;
    protected boolean fixedWidth = true;
    protected String itemHeight;
    protected String itemWidth;
    protected FlowPanel mainPanel;
    protected Storyboard storyboard;

    protected StoryboardPanel() {
        this.mainPanel = new FlowPanel();
        initWidget(mainPanel);

        this.itemHeight = getDefaultItemHeight();
        this.itemWidth = getDefaultItemWidth();
    }

    public void add(Widget widget) {
        mainPanel.add(createClickablePanelForCell(widget));
    }

    public void clear() {
        mainPanel.clear();
    }

    public Widget getWidget(int index) {
        return ((SelectablePanel) mainPanel.getWidget(index)).getChildWidget();
    }

    public int getWidgetCount() {
        return mainPanel.getWidgetCount();
    }

    public int getWidgetIndex(Widget child) {
        int count = getWidgetCount();
        for (int i = 0; i < count; i++) {
            if (getWidget(i).equals(child)) {
                return i;
            }
        }
        return -1;
    }

    public boolean isSelected(int index) {
        return mainPanel.getWidget(index).getStyleName().contains("-selected");
    }

    public Iterator<Widget> iterator() {
        return new Iterator<Widget>() {
            private int index = -1;

            @Override
            public boolean hasNext() {
                return index < (getWidgetCount() - 1);
            }

            @Override
            public Widget next() {
                if (index >= getWidgetCount()) {
                    throw new NoSuchElementException();
                }
                return getWidget(++index);
            }

            @Override
            public void remove() {
                if ((index < 0) || (index >= getWidgetCount())) {
                    throw new IllegalStateException();
                }
                mainPanel.remove(index--);
            }

        };
    }

    public boolean remove(int index) {
        return mainPanel.remove(index);
    }

    public boolean remove(Widget w) {
        int index = getWidgetIndex(w);
        if (index >= 0) {
            return mainPanel.remove(index);
        }
        return false;
    }

    public void setFixedHeight(boolean fixedHeight) {
        this.fixedHeight = fixedHeight;
    }

    public void setFixedWidth(boolean fixedWidth) {
        this.fixedWidth = fixedWidth;
    }

    public void setHorizontalAlignment(HorizontalAlignmentConstant value) {
        storyboard.getElement().getStyle().setProperty("textAlign", value.getTextAlignString());
    }

    public void setHorizontalAlignment(IsWidget child, HorizontalAlignmentConstant value) {
        child.asWidget().getParent().getElement().getStyle().setProperty("textAlign", value.getTextAlignString());
    }

    public void setLargeDeviceItemHeight(IsWidget child, String height) {
    }

    public void setLargeDeviceItemHeight(String height) {
    }

    public void setLargeDeviceItemWidth(IsWidget child, String width) {
    }

    public void setLargeDeviceItemWidth(String width) {
    }

    public void setSelected(boolean selected, int index) {
        if (selected != isSelected(index)) {
            if (selected) {
                mainPanel.getWidget(index).addStyleDependentName("selected");
            } else {
                mainPanel.getWidget(index).removeStyleDependentName("selected");
            }
        }
    }

    public void setSmallDeviceItemHeight(IsWidget child, String height) {
    }

    public void setSmallDeviceItemHeight(String height) {
    }

    public void setSmallDeviceItemWidth(IsWidget child, String width) {
    }

    public void setSmallDeviceItemWidth(String width) {
    }

    public void setVerticalAlignment(IsWidget child, VerticalAlignmentConstant value) {
        child.asWidget().getParent().getElement().getStyle().setProperty("verticalAlign",
                value.getVerticalAlignString());
    }

    public void setVerticalAlignment(VerticalAlignmentConstant value) {
        storyboard.getElement().getStyle().setProperty("verticalAlign", value.getVerticalAlignString());
    }

    protected void configHeightWidth(final Widget panel) {
        if (!StringUtils.isEmpty(itemHeight)) {
            if (fixedHeight) {
                panel.setHeight(itemHeight);
            } else {
                panel.getElement().getStyle().setProperty("minHeight", itemHeight);
            }
        }

        if (!StringUtils.isEmpty(itemWidth)) {
            if (fixedWidth) {
                panel.setWidth(itemWidth);
            } else {
                panel.getElement().getStyle().setProperty("minWidth", itemWidth);
            }
        }
    }

    protected Widget createClickablePanelForCell(Widget widget) {
        final SelectablePanel panel = new SelectablePanel();
        panel.add(widget);
        panel.setStyleName(STORYBOARD_ITEM_STYLE_NAME);
        configHeightWidth(panel);

        panel.addSelectHandler(new SelectHandler() {
            @Override
            public void onSelect(SelectEvent event) {
                int index = mainPanel.getWidgetIndex(panel);
                SelectionEvent.fire(storyboard, index);
                setSelected(!isSelected(index), index);
            }
        });

        panel.getElement().getStyle().setProperty("display", "inline-table");

        return panel;
    }

    protected abstract String getDefaultItemHeight();

    protected abstract String getDefaultItemWidth();

    protected void setStoryboard(Storyboard storyboard) {
        this.storyboard = storyboard;
    }
}