org.rstudio.studio.client.rmarkdown.ui.RmdFileOption.java Source code

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Here is the source code for org.rstudio.studio.client.rmarkdown.ui.RmdFileOption.java

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/*
 * RmdFileOption.java
 *
 * Copyright (C) 2009-14 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.studio.client.rmarkdown.ui;

import org.rstudio.core.client.widget.FileChooserTextBox;
import org.rstudio.studio.client.rmarkdown.model.RmdTemplateFormatOption;

import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.HTMLPanel;

public class RmdFileOption extends RmdNullableOption {
    public RmdFileOption(RmdTemplateFormatOption option, String initialValue) {
        super(option, initialValue);
        defaultValue_ = option.getDefaultValue();

        HTMLPanel panel = new HTMLPanel("");
        panel.add(getOptionLabelWidget());

        fileChooser_ = new FileChooserTextBox("", null);
        if (!initialValue.equals("null"))
            fileChooser_.setText(initialValue);
        fileChooser_.getElement().getStyle().setMarginLeft(20, Unit.PX);
        fileChooser_.getElement().getStyle().setMarginTop(3, Unit.PX);
        panel.add(fileChooser_);

        updateNull();

        initWidget(panel);
    }

    @Override
    public boolean valueIsDefault() {
        if (valueIsNull() && defaultValue_.equals("null"))
            return true;
        return getValue() == defaultValue_;
    }

    @Override
    public String getValue() {
        if (valueIsNull())
            return null;
        return fileChooser_.getText();
    }

    @Override
    public boolean valueIsNull() {
        // it's possible for users to check that they'd like to use a file but
        // fail to select one; in this case, act as though they didn't check the
        // box
        return super.valueIsNull() || fileChooser_.getText() == null || fileChooser_.getText().trim().isEmpty();
    }

    @Override
    public void updateNull() {
        fileChooser_.setEnabled(!super.valueIsNull());
    }

    FileChooserTextBox fileChooser_;
    CheckBox nonNullCheck_;
    String defaultValue_;
}