| /** |
| * Copyright (C) 2008 Atlassian |
| * |
| * 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.intellij.tasks.jira; |
| |
| import javax.swing.*; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public final class CachedIconLoader { |
| private static Map<String, Icon> icons = new HashMap<String, Icon>(); |
| private static Map<String, Icon> disabledIcons = new HashMap<String, Icon>(); |
| |
| private CachedIconLoader() { |
| } |
| |
| public static Icon getDisabledIcon(String urlString) { |
| return disabledIcons.get(urlString); |
| } |
| |
| private static void addDisabledIcon(String urlString, Icon icon) { |
| disabledIcons.put(urlString, icon); |
| } |
| |
| private static Icon generateDisabledIcon(Icon icon) { |
| return new ImageIcon(GrayFilter.createDisabledImage(((ImageIcon) icon).getImage())); |
| } |
| |
| private static void maybeGenerateDisabledIcon(String urlString, Icon icon) { |
| if (disabledIcons.containsKey(urlString) || icon == null) { |
| return; |
| } |
| addDisabledIcon(urlString, generateDisabledIcon(icon)); |
| } |
| |
| public static Icon getIcon(URL url) { |
| if (url != null) { |
| String key = url.toString(); |
| if (!icons.containsKey(key)) { |
| Icon i = new ImageIcon(url); |
| icons.put(key, i); |
| maybeGenerateDisabledIcon(key, i); |
| } |
| return icons.get(key); |
| } else { |
| return null; |
| } |
| } |
| |
| public static Icon getIcon(String urlString) { |
| if (urlString != null) { |
| if (!icons.containsKey(urlString)) { |
| try { |
| URL url = new URL(urlString); |
| Icon i = new ImageIcon(url); |
| icons.put(urlString, i); |
| maybeGenerateDisabledIcon(urlString, i); |
| } catch (MalformedURLException e1) { |
| return null; |
| } |
| } |
| return icons.get(urlString); |
| } else { |
| return null; |
| } |
| } |
| |
| } |