FileTypeFilter.java

package edu.washington.cs.oneswarm.ui.gwt.client.newui;

import java.util.HashSet;
import java.util.Set;

import edu.washington.cs.oneswarm.ui.gwt.client.OneSwarmGWT;
import edu.washington.cs.oneswarm.ui.gwt.client.i18n.OSMessages;

public enum FileTypeFilter {

    All("filter_all", ImageConstants.ICON_DOCUMENT_SIDEBAR, ImageConstants.ICON_DOCUMENT_CENTER),

    Videos("filter_videos", ImageConstants.ICON_VIDEO_SIDEBAR, ImageConstants.ICON_VIDEO_BROWSER,
            "asf", "avi", "mov", "mp4", "flv", "mpg", "m4v", "wmv", "divx", "xvid", "mpeg", "mkv",
            "ogv", "ac3", "aac"),

    Audio("filter_audio", ImageConstants.ICON_AUDIO_SIDEBAR, ImageConstants.ICON_AUDIO_BROWSER,
            "mp3", "aac", "wav", "aiff", "aif", "wma", "m4a", "oga", "ogg"),

    Other("filter_other", ImageConstants.ICON_OTHER_SIDEBAR, ImageConstants.ICON_OTHER_BROWSER); // show
    // only
    // things
    // which
    // CANNOT
    // be
    // identified

    public final String sidebar_icon_path;
    private final String browser_icon_path;

    public Set<String> mTypes;

    public String history_state_name;

    FileTypeFilter(String inHistoryStateName, String inIconPath, String inBrowserIconPath,
            String... inTypes) {
        // mTypes = inTypes;
        mTypes = new HashSet<String>();
        for (String type : inTypes) {
            mTypes.add(type);
        }

        history_state_name = inHistoryStateName;
        sidebar_icon_path = inIconPath;
        browser_icon_path = inIconPath;

    }

    public String getUiLabel() {
        final OSMessages msg = OneSwarmGWT.msg;
        switch (this) {
        case All:
            return msg.navigation_allFiles();
        case Videos:
            return msg.navigation_videos();
        case Audio:
            return msg.navigation_audio();
        case Other:
            return msg.navigation_other();
        }

        return "unspecified: " + this.name();
    }

    public String getBrowserIconPath() {
        return browser_icon_path;
    }

    public static boolean match(String inFilename, FileTypeFilter which) {

        String ext = getExtension(inFilename);
        return which.mTypes.contains(ext);

    }

    private static String getExtension(String inFilename) {
        /**
         * Get the extension
         */
        StringBuffer extension = new StringBuffer(5);
        for (int i = inFilename.length() - 1; i >= 0; i--) {
            if (inFilename.charAt(i) == '.') {
                break;
            }
            extension.insert(0, inFilename.charAt(i));
        }
        return extension.toString();
    }

    public static FileTypeFilter match(String inFilename) {
        String ext = getExtension(inFilename);
        for (FileTypeFilter candidate : values()) {
            if (candidate.mTypes.contains(ext)) {
                return candidate;
            }
        }
        return Other;
    }

    public static FileTypeFilter getFromName(String name) {
        for (FileTypeFilter f : FileTypeFilter.values()) {
            if (f.name().equals(name)) {
                return f;
            }
        }
        return FileTypeFilter.All;
    }
}