Added search intent handler and Google Search Action, for the global search (#1787)

* Added search intent handler

* Added support for Google Search actions

app/src/main/AndroidManifest.xml

@@ -28,7 +28,12 @@
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
-
+            <intent-filter>
+                <action android:name="android.intent.action.SEARCH" />
+                <action android:name="com.google.android.gms.actions.SEARCH_ACTION"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+            <meta-data android:name="android.app.searchable" android:resource="@xml/searchable"/>
             <!--suppress AndroidDomInspection -->
             <meta-data android:name="android.app.shortcuts" android:resource="@xml/shortcuts"/>
         </activity>

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -1,6 +1,7 @@
 package eu.kanade.tachiyomi.ui.main
 
 import android.animation.ObjectAnimator
+import android.app.SearchManager
 import android.content.Intent
 import android.graphics.Color
 import android.os.Bundle
@@ -15,6 +16,7 @@ import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.ui.base.activity.BaseActivity
 import eu.kanade.tachiyomi.ui.base.controller.*
 import eu.kanade.tachiyomi.ui.catalogue.CatalogueController
+import eu.kanade.tachiyomi.ui.catalogue.global_search.CatalogueSearchController
 import eu.kanade.tachiyomi.ui.download.DownloadController
 import eu.kanade.tachiyomi.ui.extension.ExtensionController
 import eu.kanade.tachiyomi.ui.library.LibraryController
@@ -158,6 +160,16 @@ class MainActivity : BaseActivity() {
                     setSelectedDrawerItem(R.id.nav_drawer_downloads)
                 }
             }
+            Intent.ACTION_SEARCH, "com.google.android.gms.actions.SEARCH_ACTION" -> {
+                //If the intent match the "standard" Android search intent
+                // or the Google-specific search intent (triggered by saying or typing "search *query* on *Tachiyomi*" in Google Search/Google Assistant)
+
+                setSelectedDrawerItem(R.id.nav_drawer_catalogues)
+                //Get the search query provided in extras, and if not null, perform a global search with it.
+                intent.getStringExtra(SearchManager.QUERY)?.also { query ->
+                    router.pushController(CatalogueSearchController(query).withFadeTransaction())
+                }
+            }
             else -> return false
         }
         return true

app/src/main/res/xml/searchable.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<searchable xmlns:android="http://schemas.android.com/apk/res/android"
+    android:label="@string/app_name"
+    android:hint="@string/action_global_search_hint" >
+</searchable>