SpinnerCodeGenerator.java

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * 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.motorola.studio.android.generateviewbylayout.codegenerators;

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

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.dom.Block;
import org.eclipse.jdt.core.dom.MethodDeclaration;
import org.eclipse.jdt.core.dom.Modifier.ModifierKeyword;
import org.eclipse.jdt.core.dom.PrimitiveType;
import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
import org.eclipse.jdt.core.dom.TypeDeclaration;

import com.motorola.studio.android.codeutils.i18n.CodeUtilsNLS;
import com.motorola.studio.android.generateviewbylayout.JavaViewBasedOnLayoutModifierConstants;
import com.motorola.studio.android.generateviewbylayout.model.CodeGeneratorDataBasedOnLayout;
import com.motorola.studio.android.generateviewbylayout.model.LayoutNode;

/**
 * Responsible to add methods to deal with Spinner events
 */
public class SpinnerCodeGenerator extends AbstractLayoutCodeGenerator
{
    /**
     * @param codeGeneratorData
     * @param onCreateDeclaration
     * @param typeDeclaration
     */
    public SpinnerCodeGenerator(CodeGeneratorDataBasedOnLayout codeGeneratorData,
            MethodDeclaration onCreateDeclaration, TypeDeclaration typeDeclaration)
    {
        super(codeGeneratorData, onCreateDeclaration, typeDeclaration);
    }

    @Override
    public void generateCode(IProgressMonitor monitor) throws JavaModelException
    {
        addOnItemSpinnerHandler(monitor);
    }

    /**
     * Adds methods to handle with Spinner (combo box) events
     * 
     * <br>
     * GENERATED_CODE_FORMAT:
     * <br>
     * $GUI_ID.setOnItemSelectedListener(new OnItemSelectedListener() {
     * <br>
     *   public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
     *  <br>
     *   }
     *  <br> 
     *   public void onNothingSelected(AdapterView<?> parentView) {
     *  <br>
     *   }
     *   <br>
     * }); 
     */
    private void addOnItemSpinnerHandler(IProgressMonitor monitor) throws JavaModelException
    {
        SubMonitor subMonitor = SubMonitor.convert(monitor);
        subMonitor.beginTask(CodeUtilsNLS.JavaViewBasedOnLayoutModifier_AddingSpinnerHandler,
                codeGeneratorData.getGuiItems().size());
        for (LayoutNode node : codeGeneratorData.getGuiItems())
        {
            if (node.shouldInsertCode()
                    && node.getNodeType().equals(LayoutNode.LayoutNodeViewType.Spinner.name()))
            {
                boolean containMethodDeclared =
                        checkIfInvokeMethodIsDeclared(
                                node,
                                JavaViewBasedOnLayoutModifierConstants.SET_ON_ITEM_SELECTED_LISTENER);
                if (!containMethodDeclared)
                {
                    List<MethodDeclaration> declarations = new ArrayList<MethodDeclaration>();
                    List<SingleVariableDeclaration> parameters1 =
                            new ArrayList<SingleVariableDeclaration>();
                    SingleVariableDeclaration param1 =
                            createWildcardTypeVariableDeclarationFromStrings(
                                    JavaViewBasedOnLayoutModifierConstants.ADAPTER_VIEW,
                                    JavaViewBasedOnLayoutModifierConstants.PARENT_VIEW);
                    parameters1.add(param1);
                    SingleVariableDeclaration param2 =
                            createVariableDeclarationFromStrings(
                                    JavaViewBasedOnLayoutModifierConstants.VIEW_CLASS,
                                    JavaViewBasedOnLayoutModifierConstants.SELECTED_ITEM_VIEW);
                    parameters1.add(param2);
                    SingleVariableDeclaration param3 =
                            createVariableDeclarationPrimitiveCode(PrimitiveType.INT,
                                    JavaViewBasedOnLayoutModifierConstants.POSITION); //$NON-NLS-1$
                    parameters1.add(param3);
                    SingleVariableDeclaration param4 =
                            createVariableDeclarationPrimitiveCode(PrimitiveType.LONG,
                                    JavaViewBasedOnLayoutModifierConstants.ROW); //$NON-NLS-1$ //$NON-NLS-2$
                    parameters1.add(param4);
                    MethodDeclaration methodDeclaration1 =
                            addMethodDeclaration(ModifierKeyword.PUBLIC_KEYWORD,
                                    JavaViewBasedOnLayoutModifierConstants.ON_ITEM_SELECTED,
                                    PrimitiveType.VOID, parameters1);
                    Block block1 = onCreateDeclaration.getAST().newBlock();
                    methodDeclaration1.setBody(block1);
                    declarations.add(methodDeclaration1);

                    List<SingleVariableDeclaration> parameters2 =
                            new ArrayList<SingleVariableDeclaration>();
                    SingleVariableDeclaration param1Method2 =
                            createWildcardTypeVariableDeclarationFromStrings(
                                    JavaViewBasedOnLayoutModifierConstants.ADAPTER_VIEW,
                                    JavaViewBasedOnLayoutModifierConstants.PARENT_VIEW);
                    parameters2.add(param1Method2);
                    MethodDeclaration methodDeclaration2 =
                            addMethodDeclaration(ModifierKeyword.PUBLIC_KEYWORD,
                                    JavaViewBasedOnLayoutModifierConstants.ON_NOTHING_SELECTED,
                                    PrimitiveType.VOID, parameters2);
                    Block block2 = onCreateDeclaration.getAST().newBlock();
                    methodDeclaration2.setBody(block2);
                    declarations.add(methodDeclaration2);

                    addMethodInvocationToListenerHandler(node.getNodeId(),
                            JavaViewBasedOnLayoutModifierConstants.SET_ON_ITEM_SELECTED_LISTENER,
                            JavaViewBasedOnLayoutModifierConstants.ADAPTER_VIEW,
                            JavaViewBasedOnLayoutModifierConstants.ON_ITEM_SELECTED_LISTENER,
                            declarations);
                }
            }
            subMonitor.worked(1);
        }
    }
}