CompilerChef.java revision 4df4ba38a62b791bbbc25e923efe8d9c2f9a52e9 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *      http://www.apache.org/licenses/LICENSE-2.0
7 * Unless required by applicable law or agreed to in writing, software
8 * distributed under the License is distributed on an "AS IS" BASIS,
9 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
10 * See the License for the specific language governing permissions and
11 * limitations under the License.
12 */
13
14package android.databinding.tool;
15
16import android.databinding.tool.store.ResourceBundle;
17import android.databinding.tool.util.L;
18import android.databinding.tool.writer.BRWriter;
19import android.databinding.tool.writer.DataBinderWriter;
20import android.databinding.tool.writer.JavaFileWriter;
21
22import java.util.Set;
23
24/**
25 * Chef class for compiler.
26 *
27 * Different build systems can initiate a version of this to handle their work
28 */
29public class CompilerChef {
30    private JavaFileWriter mFileWriter;
31    private ResourceBundle mResourceBundle;
32    private DataBinder mDataBinder;
33
34    private CompilerChef() {
35    }
36
37    public static CompilerChef createChef(ResourceBundle bundle, JavaFileWriter fileWriter) {
38        CompilerChef chef = new CompilerChef();
39
40        chef.mResourceBundle = bundle;
41        chef.mFileWriter = fileWriter;
42        chef.mResourceBundle.validateMultiResLayouts();
43        return chef;
44    }
45
46    public ResourceBundle getResourceBundle() {
47        return mResourceBundle;
48    }
49
50    public void ensureDataBinder() {
51        if (mDataBinder == null) {
52            mDataBinder = new DataBinder(mResourceBundle);
53            mDataBinder.setFileWriter(mFileWriter);
54        }
55    }
56
57    public boolean hasAnythingToGenerate() {
58        L.d("checking if we have anything to generate. bundle size: %s",
59                mResourceBundle == null ? -1 : mResourceBundle.getLayoutBundles().size());
60        return mResourceBundle != null && mResourceBundle.getLayoutBundles().size() > 0;
61    }
62
63    public void writeDataBinderMapper(int minSdk, BRWriter brWriter) {
64        ensureDataBinder();
65        final String pkg = "android.databinding";
66        DataBinderWriter dbr = new DataBinderWriter(pkg, mResourceBundle.getAppPackage(),
67                "DataBinderMapper", mDataBinder.getLayoutBinders(), minSdk);
68        mFileWriter.writeToFile(pkg + "." + dbr.getClassName(), dbr.write(brWriter));
69    }
70
71    /**
72     * Adds variables to list of Bindables.
73     */
74    public void addBRVariables(BindableHolder bindables) {
75        ensureDataBinder();
76        for (LayoutBinder layoutBinder : mDataBinder.mLayoutBinders) {
77            for (String variableName : layoutBinder.getUserDefinedVariables().keySet()) {
78                bindables.addVariable(variableName, layoutBinder.getClassName());
79            }
80        }
81    }
82
83    public void writeViewBinderInterfaces(boolean isLibrary) {
84        ensureDataBinder();
85        mDataBinder.writerBaseClasses(isLibrary);
86    }
87
88    public void writeViewBinders(int minSdk) {
89        ensureDataBinder();
90        mDataBinder.writeBinders(minSdk);
91    }
92
93    public Set<String> getWrittenClassNames() {
94        ensureDataBinder();
95        return mDataBinder.getWrittenClassNames();
96    }
97
98    public interface BindableHolder {
99        void addVariable(String variableName, String containingClassName);
100    }
101}
102