add initial support for NavStack

2017-02-18 21:59:48 +01:00 · 2017-02-18 21:59:48 +01:00 · 7a6b5dd5b7
commit 7a6b5dd5b7
parent e9c20ac8b0
16 changed files with 267 additions and 81 deletions
--- a/app/src/main/java/org/schabi/newpipe/util/NavStack.java
+++ b/app/src/main/java/org/schabi/newpipe/util/NavStack.java
@ -0,0 +1,125 @@
+package org.schabi.newpipe.util;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.support.v4.app.NavUtils;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
+
+import org.schabi.newpipe.ChannelActivity;
+import org.schabi.newpipe.MainActivity;
+import org.schabi.newpipe.detail.VideoItemDetailActivity;
+import org.schabi.newpipe.detail.VideoItemDetailFragment;
+import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.StreamingService;
+
+import java.util.Stack;
+
+/**
+ * Created by Christian Schabesberger on 16.02.17.
+ *
+ * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
+ * NavStack.java is part of NewPipe.
+ *
+ * NewPipe is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * NewPipe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * class helps to navigate within the app
+ * IMPORTAND: the top of the stack is the current activity !!!
+ */
+public class NavStack {
+    private static final String TAG = NavStack.class.toString();
+    public static final String SERVICE_ID = "service_id";
+    public static final String URL = "url";
+
+    private enum ActivityId {
+        CHANNEL,
+        DETAIL
+    }
+
+    private class NavEntry {
+        public NavEntry(String url, int serviceId) {
+            this.url = url;
+            this.serviceId = serviceId;
+        }
+        public String url;
+        public int serviceId;
+    }
+
+    private static NavStack instance = new NavStack();
+    private Stack<NavEntry> stack = new Stack<NavEntry>();
+
+    private NavStack() {
+    }
+
+    public static NavStack getInstance() {
+        return instance;
+    }
+
+    private void addEntry(String url, Class ac, int serviceId) {
+        stack.push(new NavEntry(url, serviceId));
+    }
+
+    public void navBack(Activity activity) throws Exception {
+        stack.pop(); // remove curent activty, since we dont want to return to itself
+        if(stack.size() == 0) {
+            openMainActivity(activity); // if no more page is on the stack this means we are home
+        } else {
+            NavEntry entry = stack.pop();  // this element will reapear, since by calling the old page
+            // this element will be pushed on top again
+            try {
+                StreamingService service = NewPipe.getService(entry.serviceId);
+                switch (service.getLinkTypeByUrl(entry.url)) {
+                    case STREAM:
+                        openDetailActivity(activity, entry.url, entry.serviceId);
+                        break;
+                    case CHANNEL:
+                        openChannelActivity(activity, entry.url, entry.serviceId);
+                        break;
+                    case NONE:
+                        throw new Exception("Url not known to service. service="
+                                + Integer.toString(entry.serviceId) + " url=" + entry.url);
+                    default:
+                        openMainActivity(activity);
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public void openChannelActivity(Context context, String url, int serviceId) {
+        openActivity(context, url, serviceId, ChannelActivity.class);
+    }
+
+    public void openDetailActivity(Context context, String url, int serviceId) {
+        openActivity(context, url, serviceId, VideoItemDetailActivity.class);
+    }
+
+    private void openActivity(Context context, String url, int serviceId, Class acitivtyClass) {
+        stack.push(new NavEntry(url, serviceId));
+        Intent i = new Intent(context, acitivtyClass);
+        i.putExtra(SERVICE_ID, serviceId);
+        i.putExtra(URL, url);
+        context.startActivity(i);
+    }
+
+    private void openMainActivity(Activity a) {
+        Intent i = new Intent(a, MainActivity.class);
+        i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        NavUtils.navigateUpTo(a, i);
+    }
+}