org.rstudio.core.client.widget.TextBoxWithButton.java Source code

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Here is the source code for org.rstudio.core.client.widget.TextBoxWithButton.java

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/*
 * TextBoxWithButton.java
 *
 * Copyright (C) 2009-12 by RStudio, Inc.
 *
 * Unless you have received this program directly from RStudio pursuant
 * to the terms of a commercial license agreement with RStudio, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */
package org.rstudio.core.client.widget;

import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.HasValueChangeHandlers;
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.*;

import org.rstudio.core.client.theme.res.ThemeResources;

public class TextBoxWithButton extends Composite implements HasValueChangeHandlers<String>, CanFocus {
    public TextBoxWithButton(String label, String action, ClickHandler handler) {
        this(label, "", action, handler);
    }

    public TextBoxWithButton(String label, String emptyLabel, String action, ClickHandler handler) {
        this(label, emptyLabel, action, null, handler);
    }

    public TextBoxWithButton(String label, String emptyLabel, String action, HelpButton helpButton,
            ClickHandler handler) {
        emptyLabel_ = emptyLabel;

        textBox_ = new TextBox();
        textBox_.setWidth("100%");
        textBox_.setReadOnly(true);

        themedButton_ = new ThemedButton(action, handler);

        inner_ = new HorizontalPanel();
        inner_.add(textBox_);
        inner_.add(themedButton_);
        inner_.setCellWidth(textBox_, "100%");
        inner_.setWidth("100%");

        FlowPanel outer = new FlowPanel();
        if (label != null) {
            Label lblCaption = new Label(label, true);
            if (helpButton != null) {
                HorizontalPanel panel = new HorizontalPanel();
                panel.add(lblCaption);
                helpButton.getElement().getStyle().setMarginLeft(5, Unit.PX);
                panel.add(helpButton);
                outer.add(panel);
            } else {
                outer.add(lblCaption);
            }
        }
        outer.add(inner_);
        initWidget(outer);

        addStyleName(ThemeResources.INSTANCE.themeStyles().textBoxWithButton());
    }

    public HandlerRegistration addClickHandler(ClickHandler handler) {
        return themedButton_.addClickHandler(handler);
    }

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

    public void focusButton() {
        themedButton_.setFocus(true);
    }

    // use a special adornment when the displayed key matches an 
    // arbitrary default value
    public void setUseDefaultValue(String useDefaultValue) {
        useDefaultValue_ = useDefaultValue;
    }

    public void setText(String text) {
        text_ = text;

        if (text_.equals(useDefaultValue_))
            textBox_.setText("[Use Default] " + text);
        else if (text.length() > 0)
            textBox_.setText(text);
        else
            textBox_.setText(emptyLabel_);

        ValueChangeEvent.fire(this, getText());
    }

    public String getText() {
        return text_;
    }

    public void setTextWidth(String width) {
        inner_.setCellWidth(textBox_, width);
    }

    public void setReadOnly(boolean readOnly) {
        textBox_.setReadOnly(readOnly);
    }

    public void click() {
        themedButton_.click();
    }

    public boolean isEnabled() {
        return themedButton_.isEnabled();
    }

    public void setEnabled(boolean enabled) {
        textBox_.setEnabled(enabled);
        themedButton_.setEnabled(enabled);
    }

    protected TextBox getTextBox() {
        return textBox_;
    }

    @Override
    public void focus() {
        textBox_.setFocus(true);
    }

    private HorizontalPanel inner_;
    private TextBox textBox_;
    private ThemedButton themedButton_;
    private String emptyLabel_;
    private String useDefaultValue_;
    private String text_ = "";

}