From 6811f139f24385c81914b7b84e544205023606e2 Mon Sep 17 00:00:00 2001
From: Aditya-Srivastav <54016427+4D17Y4@users.noreply.github.com>
Date: Wed, 18 Aug 2021 05:22:24 +0530
Subject: [PATCH] [GSoC] Image preview (#4559)

* Image preview

* refractor
---
 .../customselector/listeners/ImageSelectListener.kt   |  7 +++++++
 .../commons/customselector/ui/adapter/ImageAdapter.kt |  6 ++++++
 .../ui/selector/CustomSelectorActivity.kt             | 11 +++++++++++
 3 files changed, 24 insertions(+)

diff --git a/app/src/main/java/fr/free/nrw/commons/customselector/listeners/ImageSelectListener.kt b/app/src/main/java/fr/free/nrw/commons/customselector/listeners/ImageSelectListener.kt
index 688c93e64..1d7310b1d 100644
--- a/app/src/main/java/fr/free/nrw/commons/customselector/listeners/ImageSelectListener.kt
+++ b/app/src/main/java/fr/free/nrw/commons/customselector/listeners/ImageSelectListener.kt
@@ -1,5 +1,6 @@
 package fr.free.nrw.commons.customselector.listeners
 
+import android.net.Uri
 import fr.free.nrw.commons.customselector.model.Image
 
 /**
@@ -12,4 +13,10 @@ interface ImageSelectListener {
      * @param selectedImages : new selected images.
      */
     fun onSelectedImagesChanged(selectedImages: ArrayList<Image>)
+
+    /**
+     * onLongPress
+     * @param imageUri : uri of image
+     */
+    fun onLongPress(imageUri: Uri)
 }
\ No newline at end of file
diff --git a/app/src/main/java/fr/free/nrw/commons/customselector/ui/adapter/ImageAdapter.kt b/app/src/main/java/fr/free/nrw/commons/customselector/ui/adapter/ImageAdapter.kt
index ea7505aeb..f3fce1cc0 100644
--- a/app/src/main/java/fr/free/nrw/commons/customselector/ui/adapter/ImageAdapter.kt
+++ b/app/src/main/java/fr/free/nrw/commons/customselector/ui/adapter/ImageAdapter.kt
@@ -93,6 +93,12 @@ class ImageAdapter(
             holder.itemView.setOnClickListener {
                 selectOrRemoveImage(holder, position)
             }
+
+            // launch media preview on long click.
+            holder.itemView.setOnLongClickListener {
+                imageSelectListener.onLongPress(image.uri)
+                true
+            }
         }
     }
 
diff --git a/app/src/main/java/fr/free/nrw/commons/customselector/ui/selector/CustomSelectorActivity.kt b/app/src/main/java/fr/free/nrw/commons/customselector/ui/selector/CustomSelectorActivity.kt
index 02b0a8b1a..8dffe7306 100644
--- a/app/src/main/java/fr/free/nrw/commons/customselector/ui/selector/CustomSelectorActivity.kt
+++ b/app/src/main/java/fr/free/nrw/commons/customselector/ui/selector/CustomSelectorActivity.kt
@@ -4,6 +4,7 @@ import android.app.Activity
 import android.app.Dialog
 import android.content.Intent
 import android.content.SharedPreferences
+import android.net.Uri
 import android.os.Bundle
 import android.view.View
 import android.view.Window
@@ -15,6 +16,7 @@ import fr.free.nrw.commons.R
 import fr.free.nrw.commons.customselector.listeners.FolderClickListener
 import fr.free.nrw.commons.customselector.listeners.ImageSelectListener
 import fr.free.nrw.commons.customselector.model.Image
+import fr.free.nrw.commons.media.ZoomableActivity
 import fr.free.nrw.commons.theme.BaseActivity
 import java.io.File
 import javax.inject.Inject
@@ -156,6 +158,15 @@ class CustomSelectorActivity: BaseActivity(), FolderClickListener, ImageSelectLi
         done.visibility = if (selectedImages.isEmpty()) View.INVISIBLE else View.VISIBLE
     }
 
+    /**
+     * onLongPress
+     * @param imageUri : uri of image
+     */
+    override fun onLongPress(imageUri: Uri) {
+        val intent = Intent(this, ZoomableActivity::class.java).setData(imageUri);
+        startActivity(intent)
+    }
+
     /**
      * OnDone clicked.
      * Get the selected images. Remove any non existent file, forward the data to finish selector.