build.gradle

buildscript {
  ext.kotlinVersion = '1.3.50'
  repositories {
    google()
    jcenter()
  }
  dependencies {
    classpath 'com.android.tools.build:gradle:4.0.0'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
  }
}

allprojects {
  repositories {
    google()
    jcenter()
    mavenLocal()
  }
}

ext {
  compileSdkVersion = 30
  minSdkVersion = 14
  targetSdkVersion = 29

  androidXVersions = [
    annotation            : '1.0.1',
    appCompat             : '1.1.0',
    cardView              : '1.0.0',
    constraintlayout      : '2.0.1',
    coordinatorlayout     : '1.1.0',
    core                  : '1.5.0',
    experimental          : '1.0.0',
    fragment              : '1.0.0',
    lifecycle             : '2.0.0',
    recyclerView          : '1.0.0',
    recyclerViewSelection : '1.0.0',
    transition            : '1.2.0',
    vectorDrawable        : '1.1.0',
    viewpager2            : '1.0.0',
    dynamicanimation      : '1.0.0',
  ]

  testRunnerVersion = '1.1.0'
  espressoVersion = '3.1.0'
  mockitoCoreVersion = '2.25.0'
  truthVersion = '0.45'

  // Enforce the use of prebuilt dependencies in all sub-projects. This is
  // required for the doclava dependency.
  usePrebuilts = "true"

  // Disable pre-dexing when gradle called with -PdisablePreDex;
  preDexLibs = !project.hasProperty('disablePreDex')

  mavenRepoUrl = (project.hasProperty('mavenRepoUrl')
    ? project.property('mavenRepoUrl') : '/tmp/myRepo/')

  // Current version of the library (could be in-development/unreleased).
  mdcLibraryVersion = '1.4.0-alpha02'
  mdcLibraryPackage = "com.google.android.material"
  mdcLibraryDir = "com/google/android/material"
}

task clean(type: Delete) {
  delete rootProject.buildDir
}

private def getTransformedProjectPath(projectPath) {
  def pathComponents = projectPath.tokenize('/')
  def result = ''
  def currentPath = ''
  pathComponents.each { component ->
    if (currentPath == '') {
      currentPath += component
    } else {
      currentPath += '-' + component
    }
    result += ':' + currentPath
  }
  return result
}

/**
 * Return the module dependency for the given compatibility library name.
 */
def compatibility(name) {
  switch (name) {
    case "annotation":
      return "androidx.annotation:annotation:${androidXVersions.annotation}"
    case "appcompat":
      return "androidx.appcompat:appcompat:${androidXVersions.appCompat}"
    case "cardview":
      return "androidx.cardview:cardview:${androidXVersions.cardView}"
    case "constraintlayout":
      return "androidx.constraintlayout:constraintlayout:${androidXVersions.constraintlayout}"
    case "coordinatorlayout":
      return "androidx.coordinatorlayout:coordinatorlayout:${androidXVersions.coordinatorlayout}"
    case "core":
      return "androidx.core:core:${androidXVersions.core}"
    case "dynamicanimation":
      return "androidx.dynamicanimation:dynamicanimation:${androidXVersions.dynamicanimation}"
    case "fragment":
      return "androidx.fragment:fragment:${androidXVersions.fragment}"
    case "lifecycleRuntime":
      return "androidx.lifecycle:lifecycle-runtime:${androidXVersions.lifecycle}"
    case "recyclerview":
      return "androidx.recyclerview:recyclerview:${androidXVersions.recyclerView}"
    case "transition":
      return "androidx.transition:transition:${androidXVersions.transition}"
    case "vectordrawable":
      return "androidx.vectordrawable:vectordrawable:${androidXVersions.vectorDrawable}"
    case "recyclerViewSelection":
      return "androidx.recyclerview:recyclerview-selection:${androidXVersions.recyclerViewSelection}"
    case "viewpager2":
      return "androidx.viewpager2:viewpager2:${androidXVersions.viewpager2}"
    case "experimental":
      return "androidx.annotation:annotation-experimental:${androidXVersions.experimental}"
    default:
      throw new IllegalArgumentException("No mapping exists for name: $name.")
  }
}

/**
 * Return the project dependency for the given project path.
 */
def fromPath(path) {
  return getTransformedProjectPath(path)
}

def getArchivesBaseName(name) {
  if (name == 'lib') {
    return 'material'
  }
  def pathComponents = name.tokenize('-')
  def knownComponents = ['lib', 'java', 'com', 'google', 'android', 'material']
  def firstUnknownComponent = knownComponents.size();
  for (def i = 0; i < knownComponents.size() && i < pathComponents.size(); i++) {
    if (pathComponents[i] != knownComponents[i]) {
      firstUnknownComponent = i;
      break;
    }
  }
  def result = 'material'
  for (def i = firstUnknownComponent; i < pathComponents.size(); i++) {
    result = result + '-' + pathComponents[i];
  }
  return result;
}

subprojects {
    tasks.withType(Test) {
        maxParallelForks = Runtime.runtime.availableProcessors().intdiv(2) ?: 1
    }
}

subprojects {
  version = rootProject.ext.mdcLibraryVersion
  group = 'com.google.android.material'

  // Disable strict dependency resolution version constraints for test projects
  if (project.name.contains("tests")) {
    project.configurations.all {
      dependencyConstraints.configureEach { dependencyConstraint ->
        dependencyConstraint.version { versionConstraint ->
          versionConstraint.strictly("")
        }
      }
    }
  }

  project.plugins.whenPluginAdded { plugin ->
    def isAndroidLibrary = "com.android.build.gradle.LibraryPlugin".equals(plugin.class.name)
    def isAndroidApp = "com.android.build.gradle.AppPlugin".equals(plugin.class.name)
    def isAndroidTest = "com.android.build.gradle.TestPlugin".equals(plugin.class.name)

    if (isAndroidLibrary || isAndroidApp) {
      // Enable code coverage for debug builds only if we are not running inside the IDE,
      // since enabling coverage reports breaks the method parameter resolution in the IDE
      // debugger. Note that we avoid doing this for Android Test projects as it causes
      // crashes on Dalvik ('Class ref in pre-verified class resolved to unexpected implementation')
      project.android.buildTypes.debug.testCoverageEnabled = !hasProperty('android.injected.invoked.from.ide')
    }

    if (isAndroidLibrary || isAndroidApp || isAndroidTest) {
      // Disable pre-dexing when gradle called with -PdisablePreDex;
      project.android.dexOptions.preDexLibraries = rootProject.ext.preDexLibs

      project.android {
        compileSdkVersion rootProject.ext.compileSdkVersion

        defaultConfig.minSdkVersion rootProject.ext.minSdkVersion
        // This disables the builds tools automatic vector -> PNG generation
        defaultConfig.generatedDensities = []

        compileOptions.sourceCompatibility JavaVersion.VERSION_1_7
        compileOptions.targetCompatibility JavaVersion.VERSION_1_7

        aaptOptions.additionalParameters "--no-version-vectors"

        android {
          lintOptions {
            check 'NewApi'
          }
        }

        if (isAndroidLibrary) {
          def JAVA_RESOURCES_TEMP_DIR = "$buildDir/javaResources"

          task writeVersionFile() {
            def versionFileDir = JAVA_RESOURCES_TEMP_DIR + '/META-INF'
            def versionFileName = mdcLibraryPackage + '_' + getArchivesBaseName(project.name) + '.version'

            new File(versionFileDir).mkdirs()
            new File(versionFileDir + '/' + versionFileName).text = mdcLibraryVersion + "\n"
          }

          libraryVariants.all {
            it.processJavaResourcesProvider.get().dependsOn(writeVersionFile)
          }

          project.android.sourceSets.main.resources.srcDir JAVA_RESOURCES_TEMP_DIR
        }
      }

      if (isAndroidLibrary) {
        project.afterEvaluate {
          project.tasks.all({
            if (it instanceof com.android.build.gradle.tasks.GenerateBuildConfig) {
              // Disable generating BuildConfig.java
              it.enabled = false
            }
          })
        }
      }
    }
  }
}