Add post pinning

closes #346

mastodon/src/main/java/org/joinmastodon/android/api/requests/statuses/SetStatusPinned.java

@@ -0,0 +1,11 @@
+package org.joinmastodon.android.api.requests.statuses;
+
+import org.joinmastodon.android.api.MastodonAPIRequest;
+import org.joinmastodon.android.model.Status;
+
+public class SetStatusPinned extends MastodonAPIRequest<Status>{
+	public SetStatusPinned(String id, boolean pinned){
+		super(HttpMethod.POST, "/statuses/"+id+"/"+(pinned ? "pin" : "unpin"), Status.class);
+		setRequestBody(new Object());
+	}
+}

mastodon/src/main/java/org/joinmastodon/android/model/Status.java

@@ -60,7 +60,7 @@ public class Status extends BaseModel implements DisplayItemsParent{
 	public boolean reblogged;
 	public boolean muted;
 	public boolean bookmarked;
-	public boolean pinned;
+	public Boolean pinned;
 
 	public transient boolean spoilerRevealed;
 	public transient boolean hasGapAfter;

mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/HeaderStatusDisplayItem.java

@@ -25,6 +25,7 @@ import org.joinmastodon.android.GlobalUserPreferences;
 import org.joinmastodon.android.R;
 import org.joinmastodon.android.api.requests.accounts.GetAccountRelationships;
 import org.joinmastodon.android.api.requests.statuses.GetStatusSourceText;
+import org.joinmastodon.android.api.requests.statuses.SetStatusPinned;
 import org.joinmastodon.android.api.session.AccountSessionManager;
 import org.joinmastodon.android.fragments.AddAccountToListsFragment;
 import org.joinmastodon.android.fragments.BaseStatusListFragment;
@@ -36,6 +37,7 @@ import org.joinmastodon.android.model.Attachment;
 import org.joinmastodon.android.model.Relationship;
 import org.joinmastodon.android.model.Status;
 import org.joinmastodon.android.ui.OutlineProviders;
+import org.joinmastodon.android.ui.Snackbar;
 import org.joinmastodon.android.ui.text.HtmlParser;
 import org.joinmastodon.android.ui.utils.CustomEmojiHelper;
 import org.joinmastodon.android.ui.utils.UiUtils;
@@ -208,6 +210,24 @@ public class HeaderStatusDisplayItem extends StatusDisplayItem{
 				}else if(id==R.id.copy_link){
 					activity.getSystemService(ClipboardManager.class).setPrimaryClip(ClipData.newPlainText(null, item.status.url));
 					UiUtils.maybeShowTextCopiedToast(activity);
+				}else if(id==R.id.pin){
+					new SetStatusPinned(item.status.id, !item.status.pinned)
+							.setCallback(new Callback<>(){
+								@Override
+								public void onSuccess(Status result){
+									item.status.pinned=!item.status.pinned;
+									new Snackbar.Builder(activity)
+											.setText(item.status.pinned ? R.string.post_pinned : R.string.post_unpinned)
+											.show();
+								}
+
+								@Override
+								public void onError(ErrorResponse error){
+									error.showToast(activity);
+								}
+							})
+							.wrapProgress(activity, R.string.loading, true)
+							.exec(item.accountID);
 				}
 				return true;
 			});
@@ -293,11 +313,17 @@ public class HeaderStatusDisplayItem extends StatusDisplayItem{
 			MenuItem report=menu.findItem(R.id.report);
 			MenuItem follow=menu.findItem(R.id.follow);
 			MenuItem bookmark=menu.findItem(R.id.bookmark);
+			MenuItem pin=menu.findItem(R.id.pin);
 			if(item.status!=null){
 				bookmark.setVisible(true);
 				bookmark.setTitle(item.status.bookmarked ? R.string.remove_bookmark : R.string.add_bookmark);
+				pin.setVisible(item.status.pinned!=null);
+				if(item.status.pinned!=null){
+					pin.setTitle(item.status.pinned ? R.string.unpin_post : R.string.pin_post);
+				}
 			}else{
 				bookmark.setVisible(false);
+				pin.setVisible(false);
 			}
 			if(isOwnPost){
 				mute.setVisible(false);

mastodon/src/main/res/menu/post.xml

@@ -2,6 +2,7 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
 	<group android:id="@+id/menu_group1">
 		<item android:id="@+id/translate" android:title="@string/translate_post"/>
+		<item android:id="@+id/pin" android:title="@string/pin_post"/>
 		<item android:id="@+id/bookmark" android:title="@string/add_bookmark"/>
 		<item android:id="@+id/share" android:title="@string/button_share"/>
 		<item android:id="@+id/open_in_browser" android:title="@string/open_in_browser"/>

mastodon/src/main/res/values/strings.xml

@@ -716,4 +716,8 @@
 	<string name="tab_home">Home</string>
 	<string name="tab_search">Explore</string>
 	<string name="tab_profile">Profile</string>
+	<string name="pin_post">Pin on profile</string>
+	<string name="unpin_post">Unpin from profile</string>
+	<string name="post_pinned">Post has been pinned</string>
+	<string name="post_unpinned">Post has been unpinned</string>
 </resources>