1/*
2* Copyright 2013 The Android Open Source Project
3*
4* Licensed under the Apache License, Version 2.0 (the "License");
5* you may not use this file except in compliance with the License.
6* You may obtain a copy of the License at
7*
8*     http://www.apache.org/licenses/LICENSE-2.0
9*
10* Unless required by applicable law or agreed to in writing, software
11* distributed under the License is distributed on an "AS IS" BASIS,
12* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13* See the License for the specific language governing permissions and
14* limitations under the License.
15*/
16package com.example.android.samples.build
17
18import org.gradle.api.Plugin
19import org.gradle.api.Project
20import org.gradle.api.tasks.GradleBuild
21/**
22 * Plugin to expose build rules for sample generation and packaging.
23 */
24class SampleGenPlugin implements Plugin {
25
26    /**
27     * Creates a new sample generator task based on the supplied sources.
28     *
29     * @param name Name of the new task
30     * @param sources Source tree that this task should process
31     */
32    void createTask(
33            Project project,
34            String name,
35            SampleGenProperties props,
36            def sources,
37            def destination) {
38        project.task ([type:ApplyTemplates], name,  {
39            sources.each { tree ->
40                source += tree
41            }
42            outputDir = destination
43            include = props.templatesInclude()
44            filenameTransform = {s -> props.getOutputForInput(s)}
45            parameters = props.templateParams()
46        })
47    }
48
49
50    @Override
51    void apply(project) {
52        project.extensions.create("samplegen", SampleGenProperties)
53        project.samplegen.project = project
54            SampleGenProperties samplegen = project.samplegen
55            project.task('create') {
56                if (project.gradle.startParameter.taskNames.contains('create')) {
57                    samplegen.getCreationProperties()
58                }
59
60            }
61
62            project.task('refresh') {
63                samplegen.getRefreshProperties()
64            }
65
66        project.afterEvaluate({
67            createTask(project,
68                    'processTemplates',
69                    samplegen,
70                    samplegen.templates(),
71                    samplegen.targetProjectPath)
72            createTask(project,
73                    'processCommon',
74                    samplegen,
75                    samplegen.common(),
76                    samplegen.targetCommonPath())
77
78
79            project.task([type: GradleBuild], 'bootstrap', {
80                buildFile = "${samplegen.targetProjectPath}/build.gradle"
81                dir = samplegen.targetProjectPath
82                tasks = ["refresh"]
83            })
84            project.bootstrap.dependsOn(project.processTemplates)
85            project.bootstrap.dependsOn(project.processCommon)
86            project.create.dependsOn(project.bootstrap)
87
88            project.refresh.dependsOn(project.processTemplates)
89            project.refresh.dependsOn(project.processCommon)
90
91            // People get nervous when they see a task with no actions, so...
92            project.create {
93                doLast {
94                    println "Project creation finished."
95                }
96            }
97
98            project.refresh {
99                doLast {
100                    println "Project refresh finished."
101                }
102            }
103
104        })
105    }
106
107
108}
109