Add login tip for EHentai Setting and My Tags

app/src/main/java/com/hippo/ehviewer/preference/SignInRequiredActivityPreference.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2019 Hippo Seven
+ *
+ * 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.
+ */
+
+package com.hippo.ehviewer.preference;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Toast;
+import com.google.android.material.snackbar.Snackbar;
+import com.hippo.ehviewer.EhApplication;
+import com.hippo.ehviewer.R;
+import com.hippo.ehviewer.client.EhCookieStore;
+import com.hippo.ehviewer.client.EhUrl;
+import com.hippo.preference.ActivityPreference;
+import okhttp3.HttpUrl;
+
+public class SignInRequiredActivityPreference extends ActivityPreference {
+
+  private View view;
+
+  public SignInRequiredActivityPreference(Context context) {
+    super(context);
+  }
+
+  public SignInRequiredActivityPreference(Context context, AttributeSet attrs) {
+    super(context, attrs);
+  }
+
+  public SignInRequiredActivityPreference(Context context, AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+  }
+
+  @Override
+  protected View onCreateView(ViewGroup parent) {
+    return view = super.onCreateView(parent);
+  }
+
+  @Override
+  protected void onClick() {
+    EhCookieStore store = EhApplication.getEhCookieStore(getContext());
+    HttpUrl e = HttpUrl.get(EhUrl.HOST_E);
+    HttpUrl ex = HttpUrl.get(EhUrl.HOST_EX);
+
+    if (store.contains(e, EhCookieStore.KEY_IPD_MEMBER_ID) ||
+        store.contains(e, EhCookieStore.KEY_IPD_PASS_HASH) ||
+        store.contains(ex, EhCookieStore.KEY_IPD_MEMBER_ID) ||
+        store.contains(ex, EhCookieStore.KEY_IPD_PASS_HASH)) {
+      super.onClick();
+    } else {
+      if (view != null) {
+        Snackbar.make(view, R.string.error_please_login_first, 3000).show();
+      } else {
+        Toast.makeText(getContext(), R.string.error_please_login_first, Toast.LENGTH_LONG).show();
+      }
+    }
+  }
+}