package com.pichillilorenzo.flutter_inappwebview.InAppWebView;

import android.os.Handler;
import android.os.IBinder;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;

/**
 * A fake View only exposed to InputMethodManager.
 *
 * https://github.com/flutter/plugins/blob/master/packages/webview_flutter/android/src/main/java/io/flutter/plugins/webviewflutter/ThreadedInputConnectionProxyAdapterView.java
 */
final class ThreadedInputConnectionProxyAdapterView extends View {
    final Handler imeHandler;
    final IBinder windowToken;
    final View containerView;
    final View rootView;
    final View targetView;

    private boolean triggerDelayed = true;
    private boolean isLocked = false;
    private InputConnection cachedConnection;

    ThreadedInputConnectionProxyAdapterView(View containerView, View targetView, Handler imeHandler) {
        super(containerView.getContext());
        this.imeHandler = imeHandler;
        this.containerView = containerView;
        this.targetView = targetView;
        windowToken = containerView.getWindowToken();
        rootView = containerView.getRootView();
        setFocusable(true);
        setFocusableInTouchMode(true);
        setVisibility(VISIBLE);
    }

    /** Returns whether or not this is currently asynchronously acquiring an input connection. */
    boolean isTriggerDelayed() {
        return triggerDelayed;
    }

    /** Sets whether or not this should use its previously cached input connection. */
    void setLocked(boolean locked) {
        isLocked = locked;
    }

    /**
     * This is expected to be called on the IME thread. See the setup required for this in {@link
     * InputAwareWebView#checkInputConnectionProxy(View)}.
     *
     * <p>Delegates to ThreadedInputConnectionProxyView to get WebView's input connection.
     */
    @Override
    public InputConnection onCreateInputConnection(final EditorInfo outAttrs) {
        triggerDelayed = false;
        InputConnection inputConnection =
                (isLocked) ? cachedConnection : targetView.onCreateInputConnection(outAttrs);
        triggerDelayed = true;
        cachedConnection = inputConnection;
        return inputConnection;
    }

    @Override
    public boolean checkInputConnectionProxy(View view) {
        return true;
    }

    @Override
    public boolean hasWindowFocus() {
        // None of our views here correctly report they have window focus because of how we're embedding
        // the platform view inside of a virtual display.
        return true;
    }

    @Override
    public View getRootView() {
        return rootView;
    }

    @Override
    public boolean onCheckIsTextEditor() {
        return true;
    }

    @Override
    public boolean isFocused() {
        return true;
    }

    @Override
    public IBinder getWindowToken() {
        return windowToken;
    }

    @Override
    public Handler getHandler() {
        return imeHandler;
    }
}