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authorAllan Wang <me@allanwang.ca>2017-07-03 20:09:35 -0700
committerAllan Wang <me@allanwang.ca>2017-07-03 20:09:35 -0700
commit139f2dd8207d3a9cd67157a3e3754a9982c7f69d (patch)
tree548f23ff4f6ddce0a24e740fc550c75ad997fc29 /library/src/main/kotlin
parentb88a8834dc3be12a37856e9e2584eee7ef52c22e (diff)
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Initial creation of the Permission Manager
Diffstat (limited to 'library/src/main/kotlin')
-rw-r--r--library/src/main/kotlin/ca/allanwang/kau/iitems/KotlinIItem.kt23
-rw-r--r--library/src/main/kotlin/ca/allanwang/kau/permissions/PermissionManager.kt57
-rw-r--r--library/src/main/kotlin/ca/allanwang/kau/permissions/PermissionResult.kt26
-rw-r--r--library/src/main/kotlin/ca/allanwang/kau/permissions/Permissions.kt26
-rw-r--r--library/src/main/kotlin/ca/allanwang/kau/utils/ContextUtils.kt13
-rw-r--r--library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt4
6 files changed, 143 insertions, 6 deletions
diff --git a/library/src/main/kotlin/ca/allanwang/kau/iitems/KotlinIItem.kt b/library/src/main/kotlin/ca/allanwang/kau/iitems/KotlinIItem.kt
new file mode 100644
index 0000000..7e4bda6
--- /dev/null
+++ b/library/src/main/kotlin/ca/allanwang/kau/iitems/KotlinIItem.kt
@@ -0,0 +1,23 @@
+package ca.allanwang.kau.iitems
+
+import android.support.annotation.LayoutRes
+import android.support.v7.widget.RecyclerView
+import android.view.View
+import com.mikepenz.fastadapter.IClickable
+import com.mikepenz.fastadapter.IItem
+import com.mikepenz.fastadapter.items.AbstractItem
+
+/**
+ * Created by Allan Wang on 2017-07-03.
+ *
+ * Kotlin implementation of the [AbstractItem] to make things shorter
+ */
+open class KotlinIItem<Item, VH : RecyclerView.ViewHolder>(
+ private val type: Int,
+ @param:LayoutRes private val layoutRes: Int,
+ private val viewHolder: (v: View) -> VH
+) : AbstractItem<Item, VH>() where Item : IItem<*, *>, Item : IClickable<*> {
+ override final fun getType(): Int = type
+ override final fun getViewHolder(v: View): VH = viewHolder(v)
+ override final fun getLayoutRes(): Int = layoutRes
+} \ No newline at end of file
diff --git a/library/src/main/kotlin/ca/allanwang/kau/permissions/PermissionManager.kt b/library/src/main/kotlin/ca/allanwang/kau/permissions/PermissionManager.kt
new file mode 100644
index 0000000..7181e2c
--- /dev/null
+++ b/library/src/main/kotlin/ca/allanwang/kau/permissions/PermissionManager.kt
@@ -0,0 +1,57 @@
+package ca.allanwang.kau.permissions
+
+import android.app.Activity
+import android.content.Context
+import android.support.v4.app.ActivityCompat
+import ca.allanwang.kau.logging.KL
+import ca.allanwang.kau.utils.KauException
+import ca.allanwang.kau.utils.buildIsMarshmallowAndUp
+import ca.allanwang.kau.utils.hasPermission
+import java.lang.ref.WeakReference
+
+/**
+ * Created by Allan Wang on 2017-07-03.
+ */
+internal object PermissionManager {
+
+ var requestInProgress = false
+ val pendingResults: MutableList<WeakReference<PermissionResult>> by lazy { mutableListOf<WeakReference<PermissionResult>>() }
+
+ operator fun invoke(context: Context, permissions: Array<out String>, callback: (granted: Boolean, deniedPerm: String?) -> Unit) {
+ if (!buildIsMarshmallowAndUp) return callback(true, null)
+ val missingPermissions = permissions.filter { !context.hasPermission(it) }
+ if (missingPermissions.isEmpty()) return callback(true, null)
+ pendingResults.add(WeakReference(PermissionResult(permissions, callback = callback)))
+ if (!requestInProgress) {
+ requestInProgress = true
+ requestPermissions(context, missingPermissions.toTypedArray())
+ } else KL.d("Request is postponed since another one is still in progress")
+ }
+
+ @Synchronized internal fun requestPermissions(context: Context, permissions: Array<String>) {
+ val activity = (context as? Activity) ?: throw KauException("Context is not an instance of an activity; cannot request permissions")
+ ActivityCompat.requestPermissions(activity, permissions, 1)
+ }
+
+ fun onRequestPermissionsResult(context: Context, permissions: Array<String>, grantResults: IntArray) {
+ val count = Math.min(permissions.size, grantResults.size)
+ val iter = pendingResults.iterator()
+ while (iter.hasNext()) {
+ val action = iter.next().get()
+ if ((0 until count).any { action?.onResult(permissions[it], grantResults[it]) ?: true })
+ iter.remove()
+ }
+ if (pendingResults.isEmpty())
+ requestInProgress = false
+ else {
+ val action = pendingResults.map { it.get() }.firstOrNull { it != null }
+ if (action == null) { //actions have been unlinked from their weak references
+ pendingResults.clear()
+ requestInProgress = false
+ return
+ }
+ requestPermissions(context, action.permissions.toTypedArray())
+ }
+ }
+
+} \ No newline at end of file
diff --git a/library/src/main/kotlin/ca/allanwang/kau/permissions/PermissionResult.kt b/library/src/main/kotlin/ca/allanwang/kau/permissions/PermissionResult.kt
new file mode 100644
index 0000000..14bfdff
--- /dev/null
+++ b/library/src/main/kotlin/ca/allanwang/kau/permissions/PermissionResult.kt
@@ -0,0 +1,26 @@
+package ca.allanwang.kau.permissions
+
+import android.content.pm.PackageManager
+
+/**
+ * Created by Allan Wang on 2017-07-03.
+ */
+class PermissionResult(permissions: Array<out String>, val callback: (granted: Boolean, deniedPerm: String?) -> Unit) {
+ val permissions = mutableSetOf(*permissions)
+
+ /**
+ * Called from the manager whenever a permission has changed
+ * Returns true if result is completed, false otherwise
+ */
+ fun onResult(permission: String, result: Int): Boolean {
+ if (result != PackageManager.PERMISSION_GRANTED) {
+ callback(false, permission)
+ permissions.clear()
+ return true
+ }
+ permissions.remove(permission)
+ if (permissions.isNotEmpty()) return false
+ callback(true, null)
+ return true
+ }
+} \ No newline at end of file
diff --git a/library/src/main/kotlin/ca/allanwang/kau/permissions/Permissions.kt b/library/src/main/kotlin/ca/allanwang/kau/permissions/Permissions.kt
new file mode 100644
index 0000000..d466cb3
--- /dev/null
+++ b/library/src/main/kotlin/ca/allanwang/kau/permissions/Permissions.kt
@@ -0,0 +1,26 @@
+package ca.allanwang.kau.permissions
+
+import android.app.Activity
+import android.content.Context
+
+/**
+ * Created by Allan Wang on 2017-07-02.
+ *
+ * Bindings for the permission manager
+ */
+
+/**
+ * Hook that should be added inside all [Activity.onRequestPermissionsResult] so that the Permission manager can handle the responses
+ */
+fun Activity.kauOnRequestPermissionsResult(permissions: Array<String>, grantResults: IntArray)
+ = PermissionManager.onRequestPermissionsResult(this, permissions, grantResults)
+
+/**
+ * Request a permission with a callback
+ * In reality, an activity is needed to fulfill the request, but a context is enough if those permissions are already granted
+ * To be safe, you may want to check that the context can be casted successfully first
+ * The [callback] returns [granted], which is true if all permissions are granted
+ * [deniedPerm] is the first denied permission, if granted is false
+ */
+fun Context.requestPermissions(vararg permissions: String, callback: (granted: Boolean, deniedPerm: String?) -> Unit)
+ = PermissionManager(this, permissions, callback) \ No newline at end of file
diff --git a/library/src/main/kotlin/ca/allanwang/kau/utils/ContextUtils.kt b/library/src/main/kotlin/ca/allanwang/kau/utils/ContextUtils.kt
index c56a09d..21021e2 100644
--- a/library/src/main/kotlin/ca/allanwang/kau/utils/ContextUtils.kt
+++ b/library/src/main/kotlin/ca/allanwang/kau/utils/ContextUtils.kt
@@ -4,6 +4,7 @@ import android.app.Activity
import android.app.ActivityOptions
import android.content.Context
import android.content.Intent
+import android.content.pm.PackageManager
import android.graphics.drawable.Drawable
import android.net.ConnectivityManager
import android.net.Uri
@@ -131,13 +132,13 @@ fun Context.resolveString(@AttrRes attr: Int, fallback: String = ""): String {
* Wrapper function for the MaterialDialog adapterBuilder
* There is no need to call build() or show() as those are done by default
*/
-fun Context.materialDialog(action: MaterialDialog.Builder.() -> Unit): MaterialDialog {
+inline fun Context.materialDialog(action: MaterialDialog.Builder.() -> Unit): MaterialDialog {
val builder = MaterialDialog.Builder(this)
builder.action()
return builder.show()
}
-val Context.isNetworkAvailable: Boolean
+inline val Context.isNetworkAvailable: Boolean
get() {
val connectivityManager = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
val activeNetworkInfo = connectivityManager.activeNetworkInfo
@@ -146,17 +147,19 @@ val Context.isNetworkAvailable: Boolean
fun Context.getDip(value: Float): Float = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, value, resources.displayMetrics)
-val Context.isRtl: Boolean
+inline val Context.isRtl: Boolean
get() = resources.configuration.layoutDirection == View.LAYOUT_DIRECTION_RTL
/**
* Determine if the navigation bar will be on the bottom of the screen, based on logic in
* PhoneWindowManager.
*/
-val Context.isNavBarOnBottom: Boolean
+inline val Context.isNavBarOnBottom: Boolean
get() {
val cfg = resources.configuration
val dm = resources.displayMetrics
val canMove = dm.widthPixels != dm.heightPixels && cfg.smallestScreenWidthDp < 600
return !canMove || dm.widthPixels < dm.heightPixels
- } \ No newline at end of file
+ }
+
+fun Context.hasPermission(permissions: String) = !buildIsMarshmallowAndUp || ContextCompat.checkSelfPermission(this, permissions) == PackageManager.PERMISSION_GRANTED \ No newline at end of file
diff --git a/library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt b/library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt
index aa0736e..84794f9 100644
--- a/library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt
+++ b/library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt
@@ -106,4 +106,6 @@ inline fun <T : AutoCloseable, R> T.use(block: (T) -> R): R {
fun postDelayed(delay: Long, action: () -> Unit) {
Handler().postDelayed(action, delay)
-} \ No newline at end of file
+}
+
+class KauException(message: String) : RuntimeException(message) \ No newline at end of file