Add image-okhttp module

markwon-image-okhttp/build.gradle

@@ -0,0 +1,25 @@
+apply plugin: 'com.android.library'
+
+android {
+
+    compileSdkVersion config['compile-sdk']
+    buildToolsVersion config['build-tools']
+
+    defaultConfig {
+        minSdkVersion config['min-sdk']
+        targetSdkVersion config['target-sdk']
+        versionCode 1
+        versionName version
+    }
+}
+
+dependencies {
+
+    api project(':markwon')
+
+    deps.with {
+        api it['okhttp']
+    }
+}
+
+registerArtifact(this)

markwon-image-okhttp/src/main/AndroidManifest.xml

@@ -0,0 +1 @@
+<manifest package="ru.noties.markwon.image.okhttp" />

markwon-image-okhttp/src/main/java/ru/noties/markwon/image/okhttp/MarkwonImageOkHttpPlugin.java

@@ -0,0 +1,45 @@
+package ru.noties.markwon.image.okhttp;
+
+import android.support.annotation.NonNull;
+
+import java.util.Arrays;
+
+import okhttp3.OkHttpClient;
+import ru.noties.markwon.AbstractMarkwonPlugin;
+import ru.noties.markwon.image.AsyncDrawableLoader;
+import ru.noties.markwon.image.network.NetworkSchemeHandler;
+
+/**
+ * Plugin to use OkHttpClient to obtain images from network (http and https schemes)
+ *
+ * @see #create()
+ * @see #create(OkHttpClient)
+ * @since 3.0.0
+ */
+@SuppressWarnings("WeakerAccess")
+public class MarkwonImageOkHttpPlugin extends AbstractMarkwonPlugin {
+
+    @NonNull
+    public static MarkwonImageOkHttpPlugin create() {
+        return new MarkwonImageOkHttpPlugin(new OkHttpClient());
+    }
+
+    @NonNull
+    public static MarkwonImageOkHttpPlugin create(@NonNull OkHttpClient okHttpClient) {
+        return new MarkwonImageOkHttpPlugin(okHttpClient);
+    }
+
+    private final OkHttpClient client;
+
+    MarkwonImageOkHttpPlugin(@NonNull OkHttpClient client) {
+        this.client = client;
+    }
+
+    @Override
+    public void configureImages(@NonNull AsyncDrawableLoader.Builder builder) {
+        builder.addSchemeHandler(
+                Arrays.asList(NetworkSchemeHandler.SCHEME_HTTP, NetworkSchemeHandler.SCHEME_HTTPS),
+                new OkHttpSchemeHandler(client)
+        );
+    }
+}

markwon-image-okhttp/src/main/java/ru/noties/markwon/image/okhttp/OkHttpSchemeHandler.java

@@ -0,0 +1,57 @@
+package ru.noties.markwon.image.okhttp;
+
+import android.net.Uri;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import okhttp3.ResponseBody;
+import ru.noties.markwon.image.ImageItem;
+import ru.noties.markwon.image.SchemeHandler;
+
+class OkHttpSchemeHandler extends SchemeHandler {
+
+    private static final String HEADER_CONTENT_TYPE = "Content-Type";
+
+    private final OkHttpClient client;
+
+    OkHttpSchemeHandler(@NonNull OkHttpClient client) {
+        this.client = client;
+    }
+
+    @Nullable
+    @Override
+    public ImageItem handle(@NonNull String raw, @NonNull Uri uri) {
+        ImageItem out = null;
+
+        final Request request = new Request.Builder()
+                .url(raw)
+                .tag(raw)
+                .build();
+
+        Response response = null;
+        try {
+            response = client.newCall(request).execute();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        if (response != null) {
+            final ResponseBody body = response.body();
+            if (body != null) {
+                final InputStream inputStream = body.byteStream();
+                if (inputStream != null) {
+                    final String contentType = response.header(HEADER_CONTENT_TYPE);
+                    out = new ImageItem(contentType, inputStream);
+                }
+            }
+        }
+
+        return out;
+    }
+}

markwon/src/main/java/ru/noties/markwon/image/network/NetworkSchemeHandler.java

@@ -13,6 +13,12 @@ import java.net.URL;
 import ru.noties.markwon.image.ImageItem;
 import ru.noties.markwon.image.SchemeHandler;
 
+/**
+ * A simple network scheme handler that is not dependent on any external libraries.
+ *
+ * @see #create()
+ * @since 3.0.0
+ */
 public class NetworkSchemeHandler extends SchemeHandler {
 
     public static final String SCHEME_HTTP = "http";

settings.gradle

@@ -5,6 +5,7 @@ include ':app',
         ':markwon-ext-strikethrough',
         ':markwon-ext-tables',
         ':markwon-ext-tasklist',
+        ':markwon-image-okhttp',
         ':markwon-image-svg',
         ':markwon-image-gif',
         ':markwon-syntax-highlight',