From 0ce1fcb4f05a27eec642a0a1a0f827391d52d805 Mon Sep 17 00:00:00 2001
From: Paul van Tilburg
Date: Sun, 12 Sep 2010 13:56:24 +0200
Subject: [PATCH] Added application and source documentation.
---
COPYING | 340 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
README | 62 ++++++++++
TODO | 14 +++
plemp.rb | 137 ++++++++++++++++++----
4 files changed, 534 insertions(+), 19 deletions(-)
create mode 100644 COPYING
create mode 100644 README
create mode 100644 TODO
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..5b6e7c6
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,340 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
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+
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+
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+ How to Apply These Terms to Your New Programs
+
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+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
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+Also add information on how to contact you by electronic and paper mail.
+
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+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ , 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/README b/README
new file mode 100644
index 0000000..02aafac
--- /dev/null
+++ b/README
@@ -0,0 +1,62 @@
+= Plemp!
+
+Create your own online pile of junk! Plemp allows you to upload/put stuff
+on a single canvas, for sharing, collaging or any purpose you can think of.
+
+== Features
+
+* Uploading of image/music/video/text files
+* Adding content by means of pasting text
+* Syntax highlighting of source code files
+* (Re)arranging of the files
+* Some visual effects for eye candy purposes
+* Distributed management of the arrangement, i.e. everybody viewing the
+ Plemp page will (with some delay) see the same arrangement
+
+== Requirements
+
+Plemp! is an Camping application, so you need:
+
+* Ruby 1.8 (>= 1.8.6) or 1.9 (>= 1.9.1)
+* Camping (>= 2.0)
+ * Active Record (>= 2.3)
+ * Markaby, and optionally:
+ * Mongrel
+
+The following Ruby librares are required:
+
+* CodeRay
+* JSON
+* MIME-Types
+
+and the following JavaScript libraries:
+
+* Prototype (>= 1.6)
+* Script.aculo.us (>= 1.8)
+
+== Installation
+
+For now, Plemp! is in a developing state and not ready for site-wide
+deployment yet. However, before running, make sure that prototype.js and
+all JavaScript files from Script.aculo.us are available from public/ either
+by copying or symlinking them there.
+
+== Usage
+
+Run from the command line:
+
+ $ camping plemp.rb
+
+and head over to http://localhost:3301/ to view and use the Plemp! canvas.
+
+Files can be upload or text can be pasted using the Add/Upload Dialog
+invoked by pressing the Plus key or the Plus button in the top-right
+corner. Once uploaded, the objects can be arranged by dragging them
+around.
+
+== License
+
+Plemp! is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
diff --git a/TODO b/TODO
new file mode 100644
index 0000000..717c935
--- /dev/null
+++ b/TODO
@@ -0,0 +1,14 @@
+Plemp! ToDo
+===========
+
+* Comments
+* Titles per object
+* Drag&drop uploading
+* Arbitrary file support
+* Object features:
+ - Removal
+ - Metadata exposure
+ - Downloading of original version
+ - Resizing
+* On hover bar showing the object features
+* Working video support
diff --git a/plemp.rb b/plemp.rb
index 43e856b..9613ffc 100644
--- a/plemp.rb
+++ b/plemp.rb
@@ -1,3 +1,12 @@
+# plemp.rb - The Plemp! application, create your own on-line pile of junk!
+#
+# Plemp! is Copyright © 2010 Paul van Tilburg
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+
require "active_record"
require "camping"
require "coderay"
@@ -9,7 +18,10 @@ require "pathname"
Camping.goes :Plemp
+# We want (somewhat) indent HTML to be produced.
Markaby::Builder.set(:indent, 2)
+
+# Global variables.
unless defined? BASE_DIR
BASE_DIR = Pathname.new(__FILE__).dirname
PUBLIC_DIR = BASE_DIR + "public"
@@ -19,25 +31,35 @@ unless defined? BASE_DIR
Version = "0.1"
end
+# = The Plemp module
module Plemp
+ # Calls methods at application creation/setup time.
def self.create
Plemp::Models.create_schema
end
end
+# = The Plemp models
module Plemp::Models
+ # = The draggable model class
+ #
+ # This class represents an draggable object attached to an uploaded
+ # file.
class Draggable < Base
end
+ # = The basic fields class
+ #
+ # Class that connects model classes to database tables.
class BasicFields < V 1.0
def self.up
create_table Draggable.table_name do |d|
d.string :file
d.integer :left, :top, :z_index
- # This gives us created_at and updated_at
+ # This gives us created_at and updated_at.
d.timestamps
end
end
@@ -46,18 +68,36 @@ module Plemp::Models
drop_table Draggable.table_name
end
end
-end
+end # module Plemp::Models
+
+# = The Plemp controllers
module Plemp::Controllers
+ # = The index controller
+ #
+ # Main controller that shows the canvas with the draggable objects.
+ #
+ # path:: /
+ # view:: Views#main
class Index
+ # Retrieves all draggables and renders the main view.
def get
@draggables = Draggable.all
render :main
end
end
+ # = The current controller
+ #
+ # Controller accessed through AJAX requests by the main page for getting
+ # the current (global) state (position) of the draggables.
+ #
+ # path:: /current
+ # view:: N/A
class Current
+ # Retrieves all draggables with there top/left position and returns
+ # an Hash in JSON format.
def get
out = Hash.new
Draggable.all.each { |d| out[d.file] = [d.left, d.top] }
@@ -66,7 +106,40 @@ module Plemp::Controllers
end
end
+ # = The position save controller
+ #
+ # Controller used through AJAX request by the main page for committing
+ # position changes of the draggables to the database, i.e. the global
+ # state.
+ #
+ # path:: /savepos///
+ # view:: N/A
+ class SaveposXXX
+ # Retrieves the draggable _file_ from the database and updates its
+ # _top_ and _left_ position.
+ def post(file, top, left)
+ [top, left].each { |pos| pos.gsub!(/px$/, '') }
+ $stderr.puts("Got: file id: #{file} -> top: #{top}, left: #{left}")
+ drag = Draggable.find_by_file(file)
+ drag.top = top
+ drag.left = left
+ drag.save
+ ""
+ end
+ end
+
+ # = The static controller
+ #
+ # Controller to serve static data from either the public or upload
+ # subdirectory using X-Sendfile.
+ #
+ # path:: /static/(public,upload)/
+ # view:: N/A (X-Sendfile)
class StaticXX
+ # Determines the MIME type of the file referenced by _path_ and sets
+ # the suitable headers and X-Sendfile header. The _type_ can be either
+ # _public_ if the file came with Plemp!, or _upload_ if the file was
+ # once uploaded to Plemp!.
def get(type, path)
mime_type = MIME::Types.type_for(path).first
@headers['Content-Type'] = mime_type.nil? ? "text/plain" : mime_type.to_s
@@ -79,21 +152,24 @@ module Plemp::Controllers
end
end
- class SaveposXXX
- def post(file, top, left)
- [top, left].each { |pos| pos.gsub!(/px$/, '') }
- $stderr.puts("Got: file id: #{file} -> top: #{top}, left: #{left}")
- drag = Draggable.find_by_file(file)
- drag.top = top
- drag.left = left
- drag.save
- ""
- end
- end
-
+ # = The upload controller
+ #
+ # Controller to handle uploads from the main site. This can either
+ # be a file or some pasted text. After upload the controler redirects
+ # to the main page which includes the just uploaded file.
+ #
+ # path:: /upload
+ # redirect:: Index
class Upload
+ # Creates a text file from input text or otherise from the supplied
+ # uploaded temp file. The file name is base on the current timestamp
+ # plus the appropriate extension. Also creates an Draggable object in
+ # the database.
def post
+ # TODO: store the MIME type in the database!
+ # TODO: in case of text + filename, commit both.
if @input.text.empty?
+ # Text input has priority over file uploads.
orig_ext = File.extname(@input.file[:filename]).downcase
file_base = Time.now.strftime("%Y%m%d%H%M%S#{orig_ext}")
contents = @input.file[:tempfile].read
@@ -111,10 +187,13 @@ module Plemp::Controllers
end
end
-end
+end # module Plemp::Controllers
+# The Plemp views
module Plemp::Views
+ # The main layout used by Controllers::*#render. Loads the appropriate
+ # style and JavaScript files.
def layout
xhtml_strict do
head do
@@ -129,12 +208,15 @@ module Plemp::Views
"init_plemp();"
end
end
+ # TODO: move this to init_plemp()?
body(:onLoad => "return setup_draggables();") do
self << yield
end
end
end
+ # The main view. Shows the header, the (hidden) add_dialog and the
+ # cavnas with the draggable objects.
def main
div.header! do
h1 do
@@ -142,6 +224,13 @@ module Plemp::Views
div.add!(:onClick => "show_add_dialog(); return false;") { "+" }
end
end
+ add_dialog
+ draggables
+ end
+
+ # The add dialog. A hidden dialog only shown when the Plus button/key
+ # is used. Uses Controllers::Upload to upload a file or pasted text.
+ def add_dialog
div.add_dialog!(:style => "display:none;") do
div.background {}
form :action => R(Upload), :method => "post", :id => "add_form",
@@ -160,18 +249,28 @@ module Plemp::Views
end
end
end
+ end
+
+ # The canvas with draggables. Creates a draggable HTML element including
+ # the actually contents of the associated file per Draggable object in
+ # the database.
+ def draggables
div.draggables! do
@draggables.each do |d|
file = UPLOAD_DIR + d.file
unless file.exist?
+ # The associated file of this Draggable object is gone, remove
+ # the object from the database too.
d.destroy
next
end
+ # Determine the MIME type.
file_type = `file --brief --mime-type #{file}`.chomp
mime_type = MIME::Types[file_type].first
if mime_type.nil?
mime_type = MIME::Type.new(file_type)
end
+ # Create an HTML element based on the type of the Draggable object.
default_style = "left:#{d.left}px;top:#{d.top}px;z-index:0;display:none"
case mime_type.media_type
when "image"
@@ -201,9 +300,9 @@ module Plemp::Views
span.draggable :id => d.file, :style => default_style do
em "#{d.file}: Unsupported file type!"
end
- end
- end
+ end # case
+ end
end
- end
+ end # def draggables
-end
+end # module Plemp::Views