root / src / gr / grnet / pithos / web / client / foldertree / Folder.java @ c20ea7df
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/*
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* Copyright 2011-2012 GRNET S.A. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and
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* documentation are those of the authors and should not be
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* interpreted as representing official policies, either expressed
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* or implied, of GRNET S.A.
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*/
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package gr.grnet.pithos.web.client.foldertree; |
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import gr.grnet.pithos.web.client.Pithos; |
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import java.util.Date; |
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import java.util.HashMap; |
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import java.util.LinkedHashSet; |
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import java.util.Map; |
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import java.util.Set; |
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import com.google.gwt.core.client.GWT; |
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import com.google.gwt.http.client.Response; |
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import com.google.gwt.http.client.URL; |
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import com.google.gwt.i18n.client.DateTimeFormat; |
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import com.google.gwt.i18n.client.NumberFormat; |
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import com.google.gwt.i18n.client.DateTimeFormat.PredefinedFormat; |
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import com.google.gwt.json.client.JSONArray; |
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import com.google.gwt.json.client.JSONObject; |
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import com.google.gwt.json.client.JSONParser; |
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import com.google.gwt.json.client.JSONValue; |
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public class Folder extends FileFolderResource { |
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/*
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* The name of the folder. If the folder is a container this is its name. If it is a virtual folder this is the
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* last part of its path
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*/
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private String name = null; |
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private Date lastModified = null; |
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private long bytesUsed = 0; |
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private Folder parent = null; |
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private Set<Folder> subfolders = new LinkedHashSet<Folder>(); |
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/*
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* The name of the container that this folder belongs to. If this folder is container, this field equals name
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*/
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private String container = null; |
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/*
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* This is the full path of the folder (prefix is a misnomer but it was named so because this is used as a prefix=
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* parameter in the request that fetches its children). If the folder is a cointainer this is empty string
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*/
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private String prefix = ""; |
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private Set<File> files = new LinkedHashSet<File>(); |
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private String owner; |
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private Map<String, Boolean[]> permissions = new HashMap<String, Boolean[]>(); |
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private String inheritedPermissionsFrom; |
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public Folder() {};
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public Folder(String name) { |
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this.name = name;
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} |
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@Override
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public String getName() { |
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return name;
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} |
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@Override
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public Date getLastModified() { |
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return lastModified;
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} |
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public long getBytesUsed() { |
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return bytesUsed;
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} |
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public Set<Folder> getSubfolders() { |
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return subfolders;
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} |
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public void setSubfolders(Set<Folder> subfolders) { |
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this.subfolders = subfolders;
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} |
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public String getContainer() { |
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return container;
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} |
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public String getPrefix() { |
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return prefix;
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} |
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private void parsePermissions(String rawPermissions) { |
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String[] readwrite = rawPermissions.split(";"); |
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for (String s : readwrite) { |
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String[] part = s.split("="); |
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String perm = part[0].trim(); |
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String[] users = part[1].split(","); |
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for (String u : users) { |
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String user = u.trim();
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Boolean[] userPerm = permissions.get(u); |
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if (userPerm == null) { |
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userPerm = new Boolean[2]; |
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permissions.put(user, userPerm); |
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} |
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if (perm.equals("read")) { |
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userPerm[0] = Boolean.TRUE; |
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} |
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else if (perm.equals("write")) { |
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userPerm[1] = Boolean.TRUE; |
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} |
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} |
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} |
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} |
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public void populate(String _owner, Response response) { |
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this.owner = _owner;
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String header = response.getHeader("Last-Modified"); |
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if (header != null) |
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try {
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lastModified = DateTimeFormat.getFormat(PredefinedFormat.RFC_2822).parse(header); |
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} catch (IllegalArgumentException e) { |
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GWT.log("Last-Modified will be set to null", e);
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lastModified = null;
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} |
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header = response.getHeader("X-Container-Bytes-Used");
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if (header != null && header.length() > 0) |
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bytesUsed = Long.valueOf(header);
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String rawPermissions = response.getHeader("X-Object-Sharing"); |
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if (rawPermissions != null && rawPermissions.length() > 0) { |
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parsePermissions(URL.decodePathSegment(rawPermissions));
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} |
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if (response.getText() == null || response.getText().isEmpty()) |
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return;
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JSONValue json = JSONParser.parseStrict(response.getText()); |
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JSONArray array = json.isArray(); |
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if (array != null) { |
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subfolders.clear(); //This is necessary in case we update a pre-existing Folder so that stale subfolders won't show up
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files.clear(); |
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for (int i=0; i<array.size(); i++) { |
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JSONObject o = array.get(i).isObject(); |
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if (o != null) { |
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String contentType = unmarshallString(o, "content_type"); |
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if (o.containsKey("subdir") || (contentType != null && (contentType.startsWith("application/directory") || contentType.startsWith("application/folder")))) { |
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Folder f = new Folder();
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f.populate(this, o, _owner, container);
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if (f.getName().length() > 0) |
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subfolders.add(f); |
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} |
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else {
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File file = new File(); |
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file.populate(this, o, _owner, container);
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if (file.getName().length() > 0) |
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files.add(file); |
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} |
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} |
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} |
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} |
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} |
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public void populate(Folder _parent, JSONObject o, String _owner, String aContainer) { |
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this.parent = _parent;
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String path = null; |
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if (o.containsKey("subdir")) { |
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path = unmarshallString(o, "subdir");
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if (path.endsWith("/")) { //Always true for "subdir" |
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path = path.substring(0, path.length() - 1); |
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} |
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if (parent != null && parent.getPrefix().length() > 0) |
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name = path.substring(parent.getPrefix().length() + 1);
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else
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name = path; |
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if (name.equals("/")) |
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name = "";
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} |
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else {
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path = unmarshallString(o, "name");
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lastModified = unmarshallDate(o, "last_modified");
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if (parent != null && parent.getPrefix().length() > 0) |
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name = path.substring(parent.getPrefix().length() + 1);
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else
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name = path; |
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} |
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if (aContainer != null) { |
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container = aContainer; |
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prefix = path; |
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} |
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else {
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container = name; |
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prefix = "";
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} |
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this.owner = _owner;
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inheritedPermissionsFrom = unmarshallString(o, "x_object_shared_by");
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String rawPermissions = unmarshallString(o, "x_object_sharing"); |
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if (rawPermissions != null) |
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parsePermissions(rawPermissions); |
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} |
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public static Folder createFromResponse(String owner, Response response, Folder result) { |
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Folder f = null;
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if (result == null) |
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f = new Folder();
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else
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f = result; |
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f.populate(owner, response); |
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return f;
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} |
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@Override
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public boolean equals(Object other) { |
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if (other instanceof Folder) { |
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Folder o = (Folder) other; |
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return (owner == null ? true : owner.equals(o.getOwner())) |
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&& (getUri().equals(o.getUri())); |
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} |
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return false; |
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} |
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@Override
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public int hashCode() { |
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return getUri().hashCode();
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} |
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public Set<File> getFiles() { |
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return files;
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} |
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@Override
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public Folder getParent() {
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return parent;
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} |
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@Override
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public String getUri() { |
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return "/" + container + (prefix.length() == 0 ? "" : "/" + prefix); |
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} |
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public boolean isContainer() { |
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return parent == null; |
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} |
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public void setContainer(String container) { |
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this.container = container;
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} |
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public String getInheritedPermissionsFrom() { |
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return inheritedPermissionsFrom;
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} |
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public Map<String, Boolean[]> getPermissions() { |
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return permissions;
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} |
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@Override
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public String getOwner() { |
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return owner;
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} |
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public boolean isShared() { |
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return !permissions.isEmpty();
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} |
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/**
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* I am THE trash
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*
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* @return
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*/
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public boolean isTrash() { |
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return isContainer() && name.equals(Pithos.TRASH_CONTAINER);
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} |
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/**
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* I am IN THE trash
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*
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* @return
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*/
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public boolean isInTrash() { |
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return container.equals(Pithos.TRASH_CONTAINER);
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} |
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public boolean isHome() { |
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return isContainer() && name.equals(Pithos.HOME_CONTAINER);
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} |
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public boolean contains(Folder folder) { |
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for (Folder f : subfolders)
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if (f.equals(folder) || f.contains(folder))
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return true; |
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return false; |
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} |
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@Override
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public String getContentType() { |
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return "application/folder"; |
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} |
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@Override
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public String getPath() { |
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return ""; |
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} |
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@Override
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public String getSizeAsString() { |
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long bytes = calculateContentsSize();
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NumberFormat nf = NumberFormat.getFormat("######.#"); |
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if (bytes < 1024) |
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return String.valueOf(bytes) + " B"; |
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else if (bytes < 1024 * 1024) |
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return nf.format(Double.valueOf(bytes)/(1024)) + " KB"; |
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else if (bytes < 1024 * 1024 * 1024) |
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return nf.format(Double.valueOf(bytes)/(1024 * 1024)) + " MB"; |
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return nf.format(Double.valueOf(bytes)/(1024 * 1024 * 1024)) + " GB"; |
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} |
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private long calculateContentsSize() { |
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long total = 0; |
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for (File f : files) |
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total += f.getBytes(); |
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return total;
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} |
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@Override
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public long getBytes() { |
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return 0; |
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} |
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} |