com.risevision.ui.client.common.widgets.RiseMultiSelectWidget.java Source code

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Here is the source code for com.risevision.ui.client.common.widgets.RiseMultiSelectWidget.java

Source

// Copyright  2010 - May 2014 Rise Vision Incorporated.
// Use of this software is governed by the GPLv3 license
// (reproduced in the LICENSE file).

package com.risevision.ui.client.common.widgets;

import java.util.ArrayList;
import java.util.List;

import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.HasValue;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;

public class RiseMultiSelectWidget extends SimplePanel implements ValueChangeHandler<Boolean>, HasValue<String> {
    private VerticalPanel listPanel = new VerticalPanel();

    private ArrayList<String> valuesList = new ArrayList<String>();
    private ArrayList<CheckBox> checkBoxList = new ArrayList<CheckBox>();

    TextBox otherTextBox = null;

    public RiseMultiSelectWidget() {
        super();

        add(listPanel);

        styleControls();
    }

    private void styleControls() {
        //      setAlwaysShowScrollBars(false);
        //      getScrollableElement().getStyle().setOverflowY(Overflow.AUTO);
        //      getScrollableElement().getStyle().setOverflowX(Overflow.HIDDEN);

    }

    @Override
    public HandlerRegistration addValueChangeHandler(ValueChangeHandler<String> handler) {
        return addHandler(handler, ValueChangeEvent.getType());
    }

    @Override
    public String getValue() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void setValue(String value) {
        setValue(value, true);
    }

    @Override
    public void setValue(String value, boolean fireEvents) {
        if (fireEvents) {
            ValueChangeEvent.fire(this, value);
        }
    }

    @Override
    public void onValueChange(ValueChangeEvent<Boolean> event) {
        int itemIndex = checkBoxList.indexOf(event.getSource());

        if (itemIndex != -1) {
            setValue(valuesList.get(itemIndex), true);
        }
    }

    public void addItem(String name, String value) {
        CheckBox itemCheckBox = new CheckBox();
        itemCheckBox.addValueChangeHandler(this);
        //      itemCheckBox.setStyleName("rdn-CheckBox");

        Label nameLabel = new Label(name);
        nameLabel.setStyleName("rva-ShortText");
        nameLabel.getElement().getStyle().setProperty("whiteSpace", "nowrap");

        HorizontalPanel checkBoxPanel = new HorizontalPanel();
        checkBoxPanel.add(itemCheckBox);
        checkBoxPanel.add(new SpacerWidget());
        checkBoxPanel.add(nameLabel);

        listPanel.add(checkBoxPanel);

        checkBoxList.add(itemCheckBox);
        valuesList.add(value);
    }

    public void addOther() {
        CheckBox itemCheckBox = new CheckBox();
        itemCheckBox.addValueChangeHandler(this);
        //      itemCheckBox.setStyleName("rdn-CheckBox");

        Label nameLabel = new Label("Other:");
        nameLabel.setStyleName("rva-ShortText");
        nameLabel.getElement().getStyle().setProperty("whiteSpace", "nowrap");

        otherTextBox = new TextBox();

        HorizontalPanel checkBoxPanel = new HorizontalPanel();
        checkBoxPanel.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
        checkBoxPanel.add(itemCheckBox);
        checkBoxPanel.add(new SpacerWidget());
        checkBoxPanel.add(nameLabel);
        checkBoxPanel.add(new SpacerWidget());
        checkBoxPanel.add(otherTextBox);

        listPanel.add(checkBoxPanel);

        checkBoxList.add(itemCheckBox);
        valuesList.add(null);
    }

    public List<String> getSelectedValues() {
        ArrayList<String> selectedValues = new ArrayList<String>();

        for (int i = 0; i < checkBoxList.size(); i++) {
            if (checkBoxList.get(i).getValue()) {
                if (valuesList.get(i) == null) {
                    selectedValues.add(otherTextBox.getText());
                } else {
                    selectedValues.add(valuesList.get(i));
                }
            }
        }

        return selectedValues;
    };

    public void setSelectedValues(List<String> values) {
        setAllValues(false);

        if (values == null) {
            return;
        }

        for (String value : values) {
            boolean found = false;
            for (int i = 0; i < valuesList.size(); i++) {
                if (valuesList.get(i) != null && valuesList.get(i).equals(value)) {
                    checkBoxList.get(i).setValue(true);
                    found = true;
                    break;
                }
            }

            if (!found && valuesList.contains(null)) {
                checkBoxList.get(valuesList.indexOf(null)).setValue(true);
                otherTextBox.setText(value);
            }
        }
    }

    private void setAllValues(boolean value) {
        for (CheckBox checkBox : checkBoxList) {
            checkBox.setValue(value);
        }
    }

}