[android] Implemented alert dialog based on DialogFragment

2 files changed, 116 insertions, 0 deletions

diff --git a/android/src/com/mapswithme/maps/dialog/AlertDialog.java b/android/src/com/mapswithme/maps/dialog/AlertDialog.java
new file mode 100644
index 0000000000..683cac1790
--- /dev/null
+++ b/android/src/com/mapswithme/maps/dialog/AlertDialog.java
@@ -0,0 +1,95 @@
+package com.mapswithme.maps.dialog;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.annotation.StringRes;
+import android.support.v4.app.DialogFragment;
+import android.support.v4.app.Fragment;
+
+import com.mapswithme.maps.base.BaseMwmDialogFragment;
+
+public class AlertDialog extends BaseMwmDialogFragment
+{
+  private static final String ARG_TITLE_ID = "arg_title_id";
+  private static final String ARG_MESSAGE_ID = "arg_message_id";
+  private static final String ARG_POSITIVE_BUTTON_ID = "arg_positive_button_id";
+  private static final String ARG_REQ_CODE = "arg_req_code";
+
+  @NonNull
+  private final DialogInterface.OnClickListener mPositiveClickListener
+      = (dialog, which) -> AlertDialog.this.onClick(which);
+
+  @Nullable
+  private AlertDialogCallback mTargetCallback;
+
+  public static void show(@StringRes int titleId, @StringRes int messageId,
+                          @StringRes int positiveBtnId, @NonNull Fragment parent,
+                          int requestCode)
+  {
+    Bundle args = new Bundle();
+    args.putInt(ARG_TITLE_ID, titleId);
+    args.putInt(ARG_MESSAGE_ID, messageId);
+    args.putInt(ARG_POSITIVE_BUTTON_ID, positiveBtnId);
+    args.putInt(ARG_REQ_CODE, requestCode);
+    DialogFragment fragment = (DialogFragment) Fragment.instantiate(parent.getActivity(),
+                                                                    AlertDialog.class.getName());
+    fragment.setArguments(args);
+    fragment.show(parent.getChildFragmentManager(), AlertDialog.class.getName());
+  }
+
+  private void onClick(int which)
+  {
+    if (mTargetCallback != null)
+      mTargetCallback.onAlertDialogClick(getArguments().getInt(ARG_REQ_CODE), which);
+  }
+
+  @Override
+  public void onAttach(Context context)
+  {
+    super.onAttach(context);
+    try
+    {
+      mTargetCallback = (AlertDialogCallback) getParentFragment();
+    }
+    catch (ClassCastException e)
+    {
+      throw new ClassCastException("Caller must implement AlertDialogCallback interface!");
+    }
+  }
+
+  @Override
+  public void onDetach()
+  {
+    super.onDetach();
+    mTargetCallback = null;
+  }
+
+  @NonNull
+  @Override
+  public Dialog onCreateDialog(Bundle savedInstanceState)
+  {
+    Bundle args = getArguments();
+    if (args == null)
+      throw new IllegalArgumentException("Arguments must be non null!");
+
+    int titleId = args.getInt(ARG_TITLE_ID);
+    int messageId = args.getInt(ARG_MESSAGE_ID);
+    int positiveButtonId = args.getInt(ARG_POSITIVE_BUTTON_ID);
+    android.support.v7.app.AlertDialog.Builder builder =
+        DialogUtils.buildAlertDialog(getContext(), titleId, messageId);
+    builder.setPositiveButton(positiveButtonId, mPositiveClickListener);
+    return builder.show();
+  }
+
+  @Override
+  public void onCancel(DialogInterface dialog)
+  {
+    super.onCancel(dialog);
+    if (mTargetCallback != null)
+      mTargetCallback.onAlertDialogCancel(getArguments().getInt(ARG_REQ_CODE));
+  }
+}
diff --git a/android/src/com/mapswithme/maps/dialog/AlertDialogCallback.java b/android/src/com/mapswithme/maps/dialog/AlertDialogCallback.java
new file mode 100644
index 0000000000..85553edbc7
--- /dev/null
+++ b/android/src/com/mapswithme/maps/dialog/AlertDialogCallback.java
@@ -0,0 +1,21 @@
+package com.mapswithme.maps.dialog;
+
+public interface AlertDialogCallback
+{
+  /**
+   *
+   * @param requestCode the code that the dialog was launched with.
+   * @param which indicates which button was pressed, for details see
+   * {@link android.content.DialogInterface}
+   *
+   * @see android.content.DialogInterface.OnClickListener
+   */
+  void onAlertDialogClick(int requestCode, int which);
+
+  /**
+   * Called when the dialog is cancelled.
+   *
+   * @param requestCode the code that the dialog was launched with.
+   */
+  void onAlertDialogCancel(int requestCode);
+}