Display disclaimer dialog before starting support.

Bug: 28656426
Bug: 28141203
Change-Id: I4fc0d922170badcf5f215fe906fb616c11cf8270

src/com/android/settings/support/SupportDisclaimerDialogFragment.java

@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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.android.settings.support;
+
+import android.accounts.Account;
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.DialogFragment;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.text.Spannable;
+import android.text.TextPaint;
+import android.text.method.LinkMovementMethod;
+import android.text.style.URLSpan;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.TextView;
+
+import com.android.settings.R;
+import com.android.settings.overlay.FeatureFactory;
+import com.android.settings.overlay.SupportFeatureProvider;
+
+/**
+ * {@link DialogFragment} for support disclaimer.
+ */
+public final class SupportDisclaimerDialogFragment extends DialogFragment implements
+        DialogInterface.OnClickListener {
+
+    public static final String TAG = "SupportDisclaimerDialog";
+    private static final String EXTRA_TYPE = "extra_type";
+    private static final String EXTRA_ACCOUNT = "extra_account";
+
+    public static SupportDisclaimerDialogFragment newInstance(Account account,
+            @SupportFeatureProvider.SupportType int type) {
+        final SupportDisclaimerDialogFragment fragment = new SupportDisclaimerDialogFragment();
+        final Bundle bundle = new Bundle(2);
+        bundle.putParcelable(SupportDisclaimerDialogFragment.EXTRA_ACCOUNT, account);
+        bundle.putInt(SupportDisclaimerDialogFragment.EXTRA_TYPE, type);
+        fragment.setArguments(bundle);
+        return fragment;
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity())
+                .setTitle(R.string.support_disclaimer_title)
+                .setPositiveButton(android.R.string.ok, this)
+                .setNegativeButton(android.R.string.cancel, null);
+        final View content = LayoutInflater.from(builder.getContext())
+                .inflate(R.layout.support_disclaimer_content, null);
+        final TextView disclaimer = (TextView) content.findViewById(R.id.support_disclaimer_text);
+        disclaimer.setMovementMethod(LinkMovementMethod.getInstance());
+        stripUnderlines((Spannable) disclaimer.getText());
+        return builder
+            .setView(content)
+            .create();
+    }
+
+    @Override
+    public void onClick(DialogInterface dialog, int which) {
+        final Activity activity = getActivity();
+        final SupportFeatureProvider supportFeatureProvider =
+                FeatureFactory.getFactory(activity).getSupportFeatureProvider(activity);
+        final Bundle bundle = getArguments();
+        supportFeatureProvider.startSupport(getActivity(),
+                (Account) bundle.getParcelable(EXTRA_ACCOUNT), bundle.getInt(EXTRA_TYPE));
+    }
+
+    /**
+     * Removes the underlines of {@link android.text.style.URLSpan}s.
+     */
+    private static void stripUnderlines(Spannable input) {
+        final URLSpan[] urls = input.getSpans(0, input.length(), URLSpan.class);
+
+        for (URLSpan span : urls) {
+            final int start = input.getSpanStart(span);
+            final int end = input.getSpanEnd(span);
+            input.removeSpan(span);
+            input.setSpan(new NoUnderlineUrlSpan(span.getURL()), start, end,
+                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+    }
+
+    /**
+     * A {@link URLSpan} that doesn't decorate the link with underline.
+     */
+    public static class NoUnderlineUrlSpan extends URLSpan {
+
+        public NoUnderlineUrlSpan(String url) {
+            super(url);
+        }
+
+        @Override
+        public void updateDrawState(TextPaint ds) {
+            super.updateDrawState(ds);
+            ds.setUnderlineText(false);
+        }
+    }
+}