Floo

An URL router supporting AOP, stack control, cross-page message, and dynamic routing.

Getting started

In your build.gradle:

dependencies {
  implementation 'me.drakeet.floo:floo:1.2.0'
}

Floo has been rebuilt based on AndroidX. If you are still using the android support library, please use:

dependencies {
  implementation 'me.drakeet.floo:floo:1.1.0'
}

Usage & Examples

public class App extends Application {

    @Override
    public void onCreate() {
        super.onCreate();

        Map<String, Target> mappings = new HashMap<>();
        mappings.put("m.drakeet.me/home", new Target("floo://drakeet.sdk/target"));
        mappings.put("m.drakeet.me/link", new Target("floo://drakeet.sdk/target"));
        mappings.put("m.drakeet.me/web", new Target("floo://drakeet.sdk/web"));
        mappings.put("m.drakeet.me/container", new Target("floo://m.drakeet.me/container"));

        Floo.configuration()
            .setDebugEnabled(BuildConfig.DEBUG)
            .setIntentHandler(new FragmentIntentHandler()) // DefaultIntentHandler by default 
            .addRequestInterceptor(new LogInterceptor("Request"))
            .addTargetInterceptor(new LogInterceptor("Target"))
            .addTargetNotFoundHandler(new WebHandler())
            .addTargetNotFoundHandler(new OpenDirectlyHandler())
            .addTargetNotFoundHandler(new TargetNotFoundToaster());

        Floo.apply(mappings);
    }
}

Floo.navigation(this, "sdk://m.drakeet.me/home")
    .appendQueryParameter("date", "2017.9.11")
    .appendQueryParameter("user_id", "drakeet")
    .putExtra(TargetActivity.KEY_MAIL, mail)
    .start();

// Allow incomplete URLs
Floo.navigation(this, "PureWriter").start();

Floo.stack(this)
    .target(Urls.indexUrl("https://chunchun.io/page2"))
    .result("abc")
    .start();

Floo.stack(this)
    .popCount(2)
    .result(anything)
    .start();

Floo.stack(this).popCount(3).start();

Principle

For example, if we call the following code:

Floo.navigation(context, "https://play.google.com/store/apps/details")
    .appendQueryParameter("id", "com.drakeet.purewriter")
    .start();

At the beginning, Floo will build the URL and parameters to a full URL, like as: https://play.google.com/store/apps/details?id=com.drakeet.purewriter, and ask your registered RequestInterceptors: "Do you want to intercept and handle the URL?"

Every your registered RequestInterceptor will receive the full URL one by one. If someone deals with it and returns true, the link ends.

Otherwise, Floo will use the authority(host:port) + path to get an index key. For this example, it is play.google.com + /store/apps/details -> play.google.com/store/apps/details.

Then, Floo uses the index key to find a registered target URL / URI. If Floo finds it, Floo will transfer or merge the parameters of the original URL to the new URL. Otherwise, Floo will create a TargetNotFound event, and dispatch it to all of your registered TargetNotFoundHandlers one by one. If someone deals with it and returns true, the link ends. If nobody deals with it, the link also ends.

So what if Floo finds a target and generates a new URL?

At this point, Floo will send the new URL one by one to your registered TargetInterceptors. If someone deals with it and returns true, the link ends.

Otherwise, Floo comes to the last step, it will use this new URL to create an Intent, and start the Intent. This new URL may be associated with an Activity, so the Activity will be opened.

More Interfaces

public interface Navigation {

    @NonNull @CheckResult Navigation setFlags(int intentFlags);
    @NonNull @CheckResult Navigation appendQueryParameter(@NonNull String key, @NonNull String value);

    @NonNull @CheckResult Navigation putExtras(@NonNull Bundle bundle);
    @NonNull @CheckResult Navigation putExtras(@NonNull Intent intent);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, int value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, long value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, float value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, double value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, boolean value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, byte value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, short value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, @Nullable String value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, @Nullable CharSequence value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, @Nullable Parcelable value);
    @NonNull @CheckResult Navigation putExtra(@NonNull String key, @Nullable Serializable value);
    @NonNull @CheckResult Navigation putIntegerArrayListExtra(@NonNull String name, @NonNull ArrayList<Integer> value);
    @NonNull @CheckResult Navigation putStringArrayListExtra(@NonNull String name, @NonNull ArrayList<String> value);
    @NonNull @CheckResult Navigation putCharSequenceArrayListExtra(@NonNull String name, @NonNull ArrayList<CharSequence> value);
    @NonNull @CheckResult Navigation putParcelableArrayListExtra(@NonNull String name, @NonNull ArrayList<? extends Parcelable> value);

    @Nullable @CheckResult Intent getIntent();

    boolean hasTarget();
    void ifIntentNonNullSendTo(@NonNull IntentReceiver receiver);
    void start();
}

public interface StackStates {

    interface Target {
        @NonNull @CheckResult Flow popCount(@IntRange(from = 1) int count);
        @NonNull @CheckResult Flow target(@NonNull String indexKey);
    }


    interface Flow {
        @NonNull @CheckResult End result(@NonNull Object result);
        void start();
    }


    interface End {
        void start();
    }
}

Progurad

-keep class com.drakeet.floo.Target { *; }

Some built-in extensions

• LogInterceptor
• OpenDirectlyHandler

License

Copyright 2017 drakeet. https://github.com/drakeet

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.