Fix using runo icons in FileTypeResolver (#10858)

This patch adds a compatibility version of FileTypeResolver.

2 files changed, 125 insertions, 1 deletions

diff --git a/compatibility-server/src/main/java/com/vaadin/v7/data/util/FilesystemContainer.java b/compatibility-server/src/main/java/com/vaadin/v7/data/util/FilesystemContainer.java
index 6789e9bd81..f5105343c5 100644
--- a/compatibility-server/src/main/java/com/vaadin/v7/data/util/FilesystemContainer.java
+++ b/compatibility-server/src/main/java/com/vaadin/v7/data/util/FilesystemContainer.java
@@ -30,7 +30,7 @@ import java.util.LinkedList;
 import java.util.List;
 
 import com.vaadin.server.Resource;
-import com.vaadin.util.FileTypeResolver;
+import com.vaadin.v7.util.FileTypeResolver;
 import com.vaadin.v7.data.Container;
 import com.vaadin.v7.data.Item;
 import com.vaadin.v7.data.Property;
diff --git a/compatibility-server/src/main/java/com/vaadin/v7/util/FileTypeResolver.java b/compatibility-server/src/main/java/com/vaadin/v7/util/FileTypeResolver.java
new file mode 100644
index 0000000000..2a46c25b09
--- /dev/null
+++ b/compatibility-server/src/main/java/com/vaadin/v7/util/FileTypeResolver.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2000-2018 Vaadin Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+package com.vaadin.v7.util;
+
+import java.io.File;
+import java.io.Serializable;
+import java.util.Collections;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import com.vaadin.server.Resource;
+import com.vaadin.server.ThemeResource;
+
+/**
+ * Utility class that can figure out mime-types and icons related to files.
+ * <p>
+ * Note : The icons are associated purely to mime-types, so a file may not have
+ * a custom icon accessible with this class.
+ * </p>
+ *
+ * @author Vaadin Ltd.
+ * @since 3.0
+ * @deprecated Only used for compatibility-server
+ */
+@Deprecated
+@SuppressWarnings("serial")
+public class FileTypeResolver extends com.vaadin.util.FileTypeResolver implements Serializable {
+
+    /**
+     * Default icon given if no icon is specified for a mime-type.
+     */
+    public static Resource DEFAULT_ICON = new ThemeResource(
+            "../runo/icons/16/document.png");
+
+    /**
+     * MIME type to Icon mapping.
+     */
+    private static final Map<String, Resource> MIME_TO_ICON_MAP = new ConcurrentHashMap<>();
+
+    static {
+        // Initialize Icon2s
+        ThemeResource folder = new ThemeResource("../runo/icons/16/folder.png");
+        addIcon("inode/drive", folder);
+        addIcon("inode/directory", folder);
+    }
+
+    /**
+     * Gets the descriptive icon representing file, based on the filename. First
+     * the mime-type for the given filename is resolved, and then the
+     * corresponding icon is fetched from the internal icon storage. If it is
+     * not found the default icon is returned.
+     *
+     * @param fileName
+     *            the name of the file whose icon is requested.
+     * @return the icon corresponding to the given file
+     */
+    public static Resource getIcon(String fileName) {
+        return getIconByMimeType(getMIMEType(fileName));
+    }
+
+    private static Resource getIconByMimeType(String mimeType) {
+        final Resource icon = MIME_TO_ICON_MAP.get(mimeType);
+        if (icon != null) {
+            return icon;
+        }
+
+        // If nothing is known about the file-type, general file
+        // icon is used
+        return DEFAULT_ICON;
+    }
+
+    /**
+     * Gets the descriptive icon representing a file. First the mime-type for
+     * the given file name is resolved, and then the corresponding icon is
+     * fetched from the internal icon storage. If it is not found the default
+     * icon is returned.
+     *
+     * @param file
+     *            the file whose icon is requested.
+     * @return the icon corresponding to the given file
+     */
+    public static Resource getIcon(File file) {
+        return getIconByMimeType(getMIMEType(file));
+    }
+
+    /**
+     * Adds a icon for the given mime-type. If the mime-type also has a
+     * corresponding icon, it is replaced with the new icon.
+     *
+     * @param mimeType
+     *            the mime-type whose icon is to be changed.
+     * @param icon
+     *            the new icon to be associated with <code>MIMEType</code>.
+     */
+    public static void addIcon(String mimeType, Resource icon) {
+        MIME_TO_ICON_MAP.put(mimeType, icon);
+    }
+
+    /**
+     * Gets the internal mime-type to icon mapping.
+     *
+     * @return unmodifiable map containing the current mime-type to icon mapping
+     */
+    public static Map<String, Resource> getMIMETypeToIconMapping() {
+        return Collections.unmodifiableMap(MIME_TO_ICON_MAP);
+    }
+
+    private FileTypeResolver() {
+    }
+}