com.google.idea.blaze.base.wizard2.ui.BlazeSelectOptionControl.java Source code

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Here is the source code for com.google.idea.blaze.base.wizard2.ui.BlazeSelectOptionControl.java

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/*
 * Copyright 2016 The Bazel Authors. All rights reserved.
 *
 * 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 com.google.idea.blaze.base.wizard2.ui;

import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.idea.blaze.base.settings.ui.ProjectViewUi;
import com.google.idea.blaze.base.ui.BlazeValidationResult;
import com.google.idea.blaze.base.wizard2.BlazeNewProjectBuilder;
import com.google.idea.blaze.base.wizard2.BlazeWizardOption;
import com.google.idea.blaze.base.wizard2.BlazeWizardUserSettings;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.ui.components.panels.HorizontalLayout;
import com.intellij.ui.components.panels.VerticalLayout;
import java.awt.Dimension;
import java.util.Collection;
import javax.swing.ButtonGroup;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JSeparator;
import javax.swing.border.EmptyBorder;

/** UI for selecting a client during the import process. */
public abstract class BlazeSelectOptionControl<T extends BlazeWizardOption> {
    private static final Logger LOG = Logger.getInstance(BlazeSelectOptionControl.class);

    private final BlazeWizardUserSettings userSettings;
    private final JPanel canvas;
    private final JLabel titleLabel;
    private final Collection<OptionUiEntry<T>> optionUiEntryList;

    static class OptionUiEntry<T> {
        final T option;
        final JRadioButton radioButton;

        OptionUiEntry(T option, JRadioButton radioButton) {
            this.option = option;
            this.radioButton = radioButton;
        }
    }

    BlazeSelectOptionControl(BlazeNewProjectBuilder builder, Collection<T> options) {
        if (options == null) {
            LOG.error("No options on select screen '" + getTitle() + "'");
        }

        this.userSettings = builder.getUserSettings();

        JPanel canvas = new JPanel(new VerticalLayout(4));

        Dimension minSize = ProjectViewUi.getMinimumSize();
        canvas.setPreferredSize(minSize);

        titleLabel = new JLabel(getTitle());
        canvas.add(titleLabel);
        canvas.add(new JSeparator());

        JPanel content = new JPanel(new VerticalLayout(12));
        content.setBorder(new EmptyBorder(20, 100, 0, 0));
        canvas.add(content);

        ButtonGroup buttonGroup = new ButtonGroup();
        Collection<OptionUiEntry<T>> optionUiEntryList = Lists.newArrayList();
        for (T option : options) {
            JPanel vertical = new JPanel(new VerticalLayout(10));
            JRadioButton radioButton = new JRadioButton();
            radioButton.setText(option.getOptionText());
            vertical.add(radioButton);

            JComponent optionComponent = option.getUiComponent();
            if (optionComponent != null) {
                JPanel horizontal = new JPanel(new HorizontalLayout(0));
                horizontal.setBorder(new EmptyBorder(0, 25, 0, 0));
                horizontal.add(optionComponent);
                vertical.add(horizontal);

                option.optionDeselected();
                radioButton.addItemListener(itemEvent -> {
                    if (radioButton.isSelected()) {
                        option.optionSelected();
                    } else {
                        option.optionDeselected();
                    }
                });
            }

            content.add(vertical);
            buttonGroup.add(radioButton);
            optionUiEntryList.add(new OptionUiEntry<>(option, radioButton));
        }

        OptionUiEntry selected = null;
        String previouslyChosenOption = userSettings.get(getOptionKey(), null);
        if (previouslyChosenOption != null) {
            for (OptionUiEntry<T> entry : optionUiEntryList) {
                if (entry.option.getOptionName().equals(previouslyChosenOption)) {
                    selected = entry;
                    break;
                }
            }
        }
        if (selected == null) {
            selected = Iterables.getFirst(optionUiEntryList, null);
        }
        if (selected != null) {
            selected.radioButton.setSelected(true);
        }

        this.canvas = canvas;
        this.optionUiEntryList = optionUiEntryList;
    }

    public BlazeValidationResult validate() {
        T option = getSelectedOption();
        if (option == null) {
            return BlazeValidationResult.failure("No option selected.");
        }
        return option.validate();
    }

    public JComponent getUiComponent() {
        return canvas;
    }

    public T getSelectedOption() {
        for (OptionUiEntry<T> entry : optionUiEntryList) {
            if (entry.radioButton.isSelected()) {
                return entry.option;
            }
        }
        return null;
    }

    public void commit() {
        T selectedOption = getSelectedOption();
        if (selectedOption != null) {
            userSettings.put(getOptionKey(), selectedOption.getOptionName());
        }
    }

    /** Call when the title changes. */
    protected void setTitle(String newTitle) {
        titleLabel.setText(newTitle);
    }

    abstract String getTitle();

    abstract String getOptionKey();
}