Network Editor Release Notes
=============================
-----------------------------
Release 1.5.4 (November 2008)
-----------------------------
itemBase.py
 - fixed some problems in UserPanel related to the No GUI execution of networks
 - added NoGuiNetworkBuilder, NoGuiVPE and NoGuiExec classes to have an
   editor object even when we run withjout the gui. This enables the execution
   of network with macros as standalone programs
 - added class Communicator to support socket-based communication with network
   running as independent process
 - named the network process-`pid` during remote execution
 - added debug=False to to node.run() method
 - added select() to read from stdin and execute commands gotten from there
   when the network runs in a detached process
 - introduced button "run saved network without gui"
 - running network can be stopped with user panel

items.py
 - now for macro network we are looking for the main network name
 - introduce typeManager for network when running without gui
 - run network withoout gui with separate stop button
 - saves raw values (r"") for types.StringType
 - introduced splitratio for connections
 - repaired blocking feature to enable data loop
 - corrected small bug when saving nodes inheriting original node
 - got rid of the reference to global 'Vision.ed' in OpalUtil

net.py
  -now run pause and stop buttons correspond to the current network
  -corrected saving categories for webservices
  - added the clientSocket variable in the main scope of the server when command is executed.
    This variable point to the socket from which the command came from and can be used 
    to specify where results should be sent back.
  -added test for empty connection list when calling select (necessary on windows)
  -added class Communicator to support socket-based communication with network
   running as independent process
  - named the network process-`pid` during remote execution
  - added GANTT diagram for time profile and debug capability
  - added node.nameInlastSavedNetwork to save name of node in network executed
    in a remote process
  - introduce typeManager for network when running without gui
  - added help to run network without gui
  - default network are in imediate mode
  - repaired blocking feature to enable data loop
  - now Network.freeze simply set runOnNewData to False
  - added arg -w on command line of stand alone network to run with or without vision

ports.py
  -repaired special ports icon position

simpleNE.py
  -added resourceFolder argument which defaults to 'mgltools'
  -solved rare problem when node name already exists
  -changed "continuous run" into "immediate run"
  -quit open in the correct window when several instance of vision are running


widgets.py
  -repaired griding of widget when it moves between node and param panel
  -now for macro network we are looking for the main network name
  -added bindToRemoteProcessNode(), def _procTrigger() and
   def unbindFromRemoteProcess() to support binding GUI to remote process
   execution

-----------------------------
Releases 1.4.6 - 1.5.2 (July 2008)
-----------------------------
--Moved from Numeric to numpy

Glyph.py
  - new file

LICENSE
  - -added TSRI to the copyright part.

customizedWidgets.py
  - mousewheel in scrollabled canvas
  - now widgetsOnBackWindowsCanGrabFocus is in mglutil.gui

datatypes.py
  - added type 'object' as synonym for 'None'
  - repaired casting to list

itemBase.py
  - better updateGuiCycle and solved re-run of stopped node
  - when the network stops, the last node hasn't run properly,
    so it is marked with forceExecution 1
  - corrected error on postedmenu when delete connection
  - introduced "soft run" in vision
  - now parameter panel otion is immediate by default
  - first commit of NOGUI execution of networks
  - set runOnNewData to True while implementing, got rid of autorun
  - now parameter panel otion is not immediate by default
  - now networks runs in saved directory

items.py
  - network don't freeze anymore, just the nodes in it
  - repaired networkDefaultDirectory
  - now network reloads the opal web categories
  - set runOnNewData to True while implementing, got rid of autorun
  - renamed runOnConnect into runOnNewData and generalized it to new data and set it to false
  - stop network from running when we rebind widget at loading time
  - in function node pos args can have widgets too
  - correct rebind widget
  - now pmv command can be cut and pasted
  - repaired saving of RunFunction node
  - added filebrowser for input files in function node
  - added combobox for selection in function node
  - now parameter panel option is not immediate by default
  - now widget's labels can have ballons
  - repaired saving of pmvviewernode
  - now FunctionNode can be saved with importString
  - readded construct parameter
  - FunctionNode takes function or string
  - introduced node Split
  - now FuntionNode has dynamic output ports
  - started dynamic output ports
  - selfGeneratingNode is now FunctionNode and eval is applied on the commandString
  - now selfgeneratingnode is not self-subclassed but use args on addNode()
  - corrected menu label
  - corrected bug in adding input port to doit function
  - made sure adt and pmv run without vision
  - introduced networkDefaultDirectory
  - automated reload of modified libraries
  - correct reload of overwritten nodes in libraries
  - user library can be reloaded

macros.py
  - solves issue with saving macro nodes introduced buy noGuiRun
  - now runOnNewData is using reference_value
  - set runOnNewData to True while implementing, got rid of autorun

net.py
  - better updateGuiCycle and solved re-run of stopped node
  - when the network stops, the last node hasn't run properly,
  - so it is marked with forceExecution 1
  - introduced "soft run" in vision
  - now runOnNewData is using reference_value
  - now the nodes are not ran anymore when we load the network
  - corrected save for FunctionNode
  - adjusted menu shortcuts
  - removed adding of local path to sys.path
  - corrected filename for self running network

ports.py
  - objects can retain their current position when reparenting in vision
  - stop network from running when we rebind widget at loading time
  - corrected save for FunctionNode
  - corrected getdescr, originalDatatype is returned only for inputport

simpleNE.py
  - better filter for open and save dialogs
  - repaired networkDefaultDirectory
  - runOnNewData has an icon
  - now we can loadNetwork without taking the focus
  - now fonts are automatically saved in vision
  - repaired vision shell
  - now vision can re-run
  - argument "ins" can be pass to runVision()
  - added keyboard shortcuts
  - better font size on mac osx


widgets.py
  - repaired networkDefaultDirectory
  - now runOnNewData is using reference_value
  - renamed runOnConnect into runOnNewData and generalized it to new data and set it to false
  - added combobox for selection in function node
  - corrected default value for labelBalloon
  - corrected save for FunctionNode
  - now widget's labels can have ballons
  - removed useless NERadioButton
  - made sure adt and pmv run without vision
  - corrected widget filename path on win32
  - repaired configure of initialValue



-----------------------------
Release 1.4.5 (May 2007)
-----------------------------

New features, bug fixes:

customizedWidgets.py
 - introduced widgetsOnBackWindowsCanGrabFocus
   now, on windows, the widget grab the focus only if the window is already activated.

items.py

 - corrected bug when copying node with deleted port
 - corrected widget delete when port has been deleted and recreated

macros.py
 - changed contextual menu 'Delete' network into 'Close' to solve bug

net.py
 - now we run the nodes before the connection (in the saved network)

ports.py
 - now, default port data is 'no data yet'

simpleNE.py
 - added "Open Recent" menu

widgets.py
 - introduced node ScrolledList
 - fixed to set _modified =True in NEEntry Button widget.
   Now entry widgets in saved networks remember values


-----------------------------
Release 1.4.4 (December 2006)
-----------------------------

New features, bug fixes:

 - moved user panels to the network and added delete user panel handling
 - added datatype 'coord2'
 - introduced self launchable network depending on the existence of a user panel
 - moved user panels to the network and added delete user panel handling
 - removed menubar in user panel, made buttons instead
 - introduced placer in user panels
 - repaired bug when deleting connections, the callback can destroy some connections in the list
 - we don't restore the pmvViewer states on first run (only for regular viewer)
 - moved n.beforeRemovingFromNetwork() after deleteConnections()
 - introduced node StickImageNE
 - we don't run automaticaly the saved network anymore
 - corrected the writing of launchVisionToRunNetworkAsApplication()
 - moved user panels to the network and added delete user panel handling
 - introduced self launchable network depending on the existence of a user panel
 - introduced placer in user panels
 - revised saving network as application
 - a safer saveNetwork()

------------------------------
Release 1.4.3 (September 2006)
------------------------------

New features, changes:
 - Network connections are highlighted in pink when mouse is over it.
 - node 'show/hide GUI' is deprecated;
 - reparenting menu is only for geometry nodes;
 - modified 'Next parenting' to affect any parenting;
 - introduced new SelectMultipleGeometry;
 - improved casting and validation;
 - suppressed unused ObjectType;
 - now loading of network in pmv shows both regular and pmv networks at the same time; 
 - introduced pmv vision network as _pmvnet.py;
 - now when you delete a macro, the currentNetwork doesn't change anymore;

Bug fixes:

 - corrected glflabels when several labels are given;
 - corrected name proposal when saving new node;
 - corrected saving of nodes for userlib;


-----------------------------
Release 1.4.2 (May 2006)
------------------------------
Changes and bug fixes:

Editor.py
-corrected small bug to allow node saving when we delete a port
-now macroNode only permits single connection ports.
-corrected bug when deleting output ports
-corrected bug when renaming ports

datatypes.py
-corrected validate in ArrayType
-introduced StringType and ObjectType based on anyarraytype
-now node save source code generates necessary lines to load synonyms
-introduced Types files per library
-corrected getTypeFromClass to return the instance of AnyArrayType for None
-add indice2 type

itemBase.py
-corrected bug related to "show legend" and apply.
-corrected bug when closing colormap settings
-corrected bug when closing colormap settings

items.py
-cascade menu for FastLibs in vision toobar, smaller icon for diamond ports,
 smaller and toggable port's icons in the library GUI
-now the nodes are drawn with their ports in the GUI as in the networks
-better comments and menu lines on "save source code"
-mRequiredTypes and mRequiredSynonyms are class variables in the class node
-we prepare the save node to load types and widgets when instanciated
(we still need to find a solution to load synonyms).
Commented code that displays port in library vision gui
-corrected bug when saving colormap node source code,
-reduced default colormap node to 16 values
-corrected bug on saving doit function when saving macros,
-corrected bug on automatic loading of nodes in mydefaultlib
-object's states are now saved at the end of the networks,
- fixed NetworkNode.outputData to allow outputing None
-added try: arround connections in saved networks
-dependent code for nodes doesn't save doit if not necessary,
 when the port name changes, it changes in the code as well
-corrected bug when saving colormap node source code

net.py
-corrected bug on saving doit function when saving macros,
-corrected bug on automatic loading of nodes in mydefaultlib
-now parenting geometry nodes can be done througth macros
-added try except around masternet run() in saved network

ports.py
-corrected getDataStr to accept single values as Numeric array
-changed gray to make not required ports more differentiable
-adjusted port's display, now not required ports have a gray outline
-input ports outline in vision library gui are black, gray or red.
-modifications to prepare drawing the port icons in the vision gui

simpleNE.py
-added self.pyshell.begin() and self.pyshell.close()

Release 1.4.1  (March 2006)
-------------------------------
What's New since 1.3alpha2:
--------------------------
-In datatypes.py:
  * moved colorRGB and colorsRGB types to NetworkEditor.datatypes;	
  * moved the type InstanceMatricesType from NetworkEditor to DejaVuNodes;
  * added support of moving widget to macroParamPanel
-In itemBase.py:
  * replaced 2 calls to c.tk.call by a single one in NetworkItems.run
  * modified port.getData to always print message if editor.verbose is true
    and data is bad or missing
  * modified NetworkNodeBase.computeFunction to turn node outline orange if data is missing
  * made NetworkItem.run check for 'Stop' status to avoid overwriting orange
    outline with execution failed outline color
-In items.py:
  * added a check for the existance of initialValue in widgetDescr of unbound
    widgets when generating source code.
  * added node.ischild(node) method to find out if a given node is a child of another
    one.  This is used in net.runNodes to remove children nodes of nodes who
    return 'STOP'
  * added safeName() method to NetworkNodeBase to remove all bad symbols from
    node name so we can use node name in saving network.
  * added NetworkNodeBase.getUniqueNodeName() to return a unique name usable
    as a variable in a saved network. Changed all definitions of nodeName
    to call this method instead
  * modified getNodeSourceCodeForWidgetValue to Set widget with run=1. That way
    Root nodes will present the data on their output port when restored.
  * modified net.getNetworkCreationSourceCode to freeze network before
    connecting nodes and unfreeze after the conections are created.  This avoids
    running the network when it is restored.
  * replaced inputPorts[] by getInputPortByName() and outputPorts[] by getOutputPortByName()
-In net.py:
  * modified scheduling to propagate node return value. Returning 'stop'
    prevents children nodes from running again
  * added new accelerator <CTRL-f> to freeze/unfreeze the current network.	
  * added self.runOnConnect attribute to network to be able to prevent
    execution of the hold node upon connection.  This was causing macros such
    as rotateScene to execute when restored from a file
  * made node2 runn upon deletion of a connection only if port2 is not required.
  * modified net.deleteConnections to set _newdata to True in input port of
    child node and schedule the child node's execution
  * check if the mouse moved only a few pixels upon releasing left mouse button.
    If we are below a threshold we assume we did not move. This is usefull for
    deselecting selected nodes for people who don't have a steady hand (who move
    the mouse when releasing the mouse button, or when the mouse pad is very soft
    and the  mouse moves because it is pressed in the pad...)
  * added self.runOnConnect attribute to network to be able to prevent
    execution fo the chold node upon connection.  This was causing macros such
     as rotateScene to execute when restored from a file
  * modified special connection to use stipple gray75 and with 4 by default
  * added comment in net.runNodes about status==0 .. I am not sure when this
    happens if at all .. and if we shoudl do the same as for stop or not
  * modified runNodes method to no longer break out of the loop running nodes
    when a node returns 'Stop', but rather remove all the children of this node
    from the list of nodes to be run.
  * modified getNodeSourceCodeForWidgetValue to Set widget with run=1. That way
    Root nodes will present the data on their output port when restored.
  * modified net.getNetworkCreationSourceCode to freeze network before
    connecting nodes and unfreeze after the conections are created.  This avoids
    running the network when it is restored.
-In ports.py:
  * changed PortsDescr.append to accept eiter a single dict or a list of kwy=values
-In widgets.py:
  * added newValueCallback method to set _newdata when widget is modified so that portHasNewData 
    works properly.  This function is now the command bound to the widgets instead of scheduleNode 
    which is called by newValueCallback.
  * added lockedOnPort key word for widgets allowing a programmer to disable
    widget unbinding.  This facilitates writting the doit() method of the node
    as it can be expected that the widget is always there
-In Editor.py:
  * added CodeEditorIdle_python24 class for editing files with python2.5 idlelib.EditorWindow
-In macros.py:
  * made InputPortNode the last root in the list to be run by InputPortNode and
    removed OutputPortNode from this list as it is not a root !
  * modified MacroNetwork.getNodeDefinitionSourceCode to also freeze before
    creating connections and unfreexing after
  * modified getHeaderBlock, getInitBlock, getBeforeBlock, getAfterBlock in
    MacroNode to ignore self.library because when we get source code we want
    to subclass MacroNode and not the original Macro
  * 

BugFixes:
---------
-In Editor.py:
  * older versions of idlelib which may be distributed with Python cause problems with the source code
    editor. Modified the test in Editor.py so that it will fail when an older idlelib is detected and 
    use the Pmw code editor instead.
-In itemBase.py:
  * fixed frozen color when selecting/unselecting and when coloring
    by Node Library. Even if the node is colored by library, it is colored blue when frozen.
-In items.py: 
  * refresh network did not color the node icons correctly. Frozen color or node library color 
    was lost. This was fixed in buildNodeIcon().
  * fixed Node's updateCode() method which as assuming there is no space
    between doit() and the following self.
  * fixed safeName to avoid names starting with a number
-In macros.py:
  * saving a macro with no connections would raise an exception. The problem was that we defined 
    "macroNetworkName" inside the test if we have len(connections). Moved the definition outside 
    of the test
  * autoRun=False was not saved for macro nodes. Fixed this.
  * added macNet._originalNodes = [] and macNet._originalConnections = [] in
    MacroNode.buildOriginalList to make sure that we build the list starting from
    an empty list.  This caused a bug in the CoarseMolSurf macro which was
    written to subclass the UT_IsoDecim macro.  Its beforeAddingToNetwork method
    called the on of UT_IsoDecim which put its nodes into the list. then the
    call to buildOriginalList at the end of beforeAddingToNetwork of the macro
    appended to the lsit of nodes from UT_IsoDecim
-In widgets.py:
  * fixed ScrolledText widget to save its value, and 'right-click' to pop up menu.
  * fixed a bug in TkPortWidget: in the configure method we need to test if tkOptions is not None, 
    since this might be None and then we cannot iterate over it




Release September 1, 2004
-------------------------

What's New (compared to release Sep 18, 2003)

- added a widget editor to modify the appearance of a widget
- added a widget grid editor to modify the grid position of a widget and
  to modify the label of a widget
- invisible ports are no longer taken into account when computing the position
  of ports. Hiding a port (by binding a widget), or deleting a port will cause
  all ports to the right to be shifted to the left.
- displaying a previously hidden port (by unbinding a widget) triggers moving
  all ports right of it to the right.
- added new method updateIconPosition() to ports.py which moves the port icon
  and its connections
- added new port attribute port.visible which is needed for the new
  setPortPosX()
- made widget background colored
- addInputPort() and addOutputPort() methods in items.py now generate unique
  port names and correctly update node.inputPortsDescr/outputPortsDescr
- update ports.py buildIcons() method to be more clever when resize the node
  icon, added support for SpecialPorts, and most importantly using the
  correct tags for Tkinter
- added new method destroyIcon() to ports.py that destroys port menu and
  port icons
- moved startConnectRubberBand, drawRubberBand, createConnection from
  class OutputPort to Port so that SpecialPorts (who now inherit from Port
  and not from InputPort or OutputPort still work)
- cleaned up SpecialPorts:
  - they no longer implement their own buildIcon() and createIcon() method
  - but they implement a computePortPosX() method now
- added a new TreeView widget to introspect a node or data and replaced the
  idlelib introspect GUI with this new widget, which allows us more flexibility
- added autoRun attribute to itemBase; moved frozen attribute from NetworkNode
  to NetworkItems; added frozenTk and autoRunTk variable to NetworkItems;
  added toggleAutoRun_cb method to NetworkItems; moved toggleFrozen_cb,
  freeze and unfreeze methods from NetworkNode to NetworkItems; added check to
  run method to not run nodes with autoRun==False or frozen==True;
  added autoRun constructor option to NetworkItems
- added new method _setModified() to access the attribute _modified
- changed all direct access to _modified to go through this new method
- completely rewrote the saving of networks: all methods called by
  getNodeDefinitionSourceCode() were rewritten. Note: older networks can still
  be loaded!
- no code modification, but an organisatory change:
  moved code blocks that belong together (code for saving a network,
  code for generating source code)
- added a new attribute _id to NetworkNode which is a unique number and used
  when saving networks
- added configure() and getDescr() to NetworkNode which is now used by
  save/restore, copy/paste; changed getNodeSourceCodeForModifications() to 
  use the new framework with configure() a node
- added new attribute hasMoved which is set to True if the node changes its
  position in a network
- show/hide special ports is now handled by the node's configure() method
- showSpecialPorts() and hideSpecialPorts() set node._modified=True
- changed attribute value self.specialPortsVisible from 0/1 to True/False
- added new method resetTags() to node which resets both _modified and
  _original
- changed all getNodeSourceCodeFor<NetworkItem>() methods to use _original
- reworked the getNodeSourceCodeForPorts() method to make it more
  human-readable
- adding or deleting a port does no longer set the node's _modified to True
- deleting or unbinding a widget now sets port._modified=True
  We use this information now when we create code to save a network in
  getNodeSourceCodeForWidgets()
- saving networks no longer sets widget values by default, but only if the
  widget value is different from the class defined initialValue
- setting widget value now sets widget._modified=True
  This allows to save/restore macro nodes from node libraries with much less
  code to be saved (no more setting all widget values again)
- updated connection.getSourceCode: we now test if the connection goes to a
  MacroInput/OutputNode, and whether  we have to connect to 'new' or to an 
  existing port (to avoid creating new ports)
- macros now use again the getNodeDefinitionSourceCode() method to generate
  a string to save data
- when saving, if we hit a macro node, we first recursively loop over all
  macro networks and add all the macro nodes, then we start filling the
  leaf macro networks with nodes, and connect them, then move down the tree
  towards the root macro(s)
- added some "smartness" to saving macros: if the macro comes from a node
  library and we just change a widget value, we might not have a handle to the
  node. Thus, if we reach such a case we now check if the node has already
  be declared, if not, we add a line.
- deleted all methods in MacroNetwork since we no longer need them (the editLog
  is gone)
- changed signature of method getNodeSourceCode(): we no longer pass a
  keyword nodeNumber and forLib
- added a new base class NetworkItemBase from which all network items inherit
- changed attribute .editor to be a weakref and added mechanism to remain
  backwards compatible (even though this is a weakref, we can still access
  it as it would be a normal attribute, we do not need to call it ->
  not object.editor()
- changed access to .editor to use the new method getEditor()
- moved the method updateCode() from ports.py to items.py, subclassed this in
  macros, changed code wherever this was accessed
- the paramPanel immediate flag can now be set through the node's configure()
  method with the new keyword paramPanelImmediate. Also, the node's getDescr()
  method returns this new keyword. This is used to save the status fo the
  immediate flag of the param Panel.
- added new class UserPanel
- added support to UserPanel for moving widgets and labels using arrow keys
  (after middle clicking to select widget to move)
- added try/except statments to saved networks allowing to restore partial
  networks
- made connectNodes accept either port numbers or port names
- added 2 metods to node class getInputPortByName and
  getOutputPortByName
- double-clicking on nodes with displayed paramPanel now hides the panel
  (double-clicking again displays panel, etc.)
- added new method getSize() that returns a tuple with (width, height) of this
  node, in pixels
- added blocking attribute to connections to allow for cycles
- added a new class CodeEditor that inherits from either idlelib if avialable
  or from Pmw. SourceCodeEditor and CallbackEditor use this new base class
- deleted classes SourceCodeEditorIdle and SourceCodeEditorPmw in Editor.py,
  fixed methods there to work with the new additions and changes
- removed show/hide Param. Panel from node menu, replaced this with a new
  checkbutton entry named "Parameter Panel", added new variable paramPanelTk,
  double-clicking on node to show Param. Panel also sets this variable
  correctly
- added a checkbutton under Edit menu to togle splined connections on and off
- added toggleSplineConnections call back to betwork for handling checkbutton
- added setSplineConnections methos to network to set smooth option on and off
- added support to move selected nodes with arrow keys. Pressing arrow ke
  moves selected subgraph 1 pixel. Pressing SHIFT+Arrow key moves 10 pixels
- made dynamic inputports of macrooutput nodes not required
- added new accelerators for some operations (such as load/save network),
  create macro, etc. One can now hit CTRL+l to load a network, etc
- moved the code to force node execution upon instanciation from
  Vision.VPE.endDD to NetworkEditor.net.AddNode so that nodes restored from a 
  file behave the same way as when they are created from a library 
  interactively
- clarified definition of 'waiting' for execStatus
- set execstatus to running and reset to waiting in run method
- removed attempt the acquire and release runlock in toggle pause method as
  this method calls pause and resume which each do that
- added runAgain attribute to handle rerunning the network in case a run
  was requested while te network is already running
- added new method deleteConnection() which accepts "node1, port1, node2, port"
  (versus deleteConnections() which accepts a list of connections)
- added new method nodeIdToNumber(): network nodes now have a unique ID. This
  method allows to get for a given node the current index in network.nodes
- modified connectNodes to test singleConnection is True to support 'auto' as
  a valid value for this attribute
- adding a node to a network tags the network modified
- added source code to saved networks to restore user panels

Bug Fixes

- Fixed ParamPanel applyFun (was node.schedule) which would not trigger node
  to run, new applyFun is node.schedule_cb, which first sets
  node.forceExecution=True, then calls node.schedule()
- deletePort() method now accepts and properly propagates keyword resize
  used to resize the node icon
- rewrote large parts of itemBase.deletePort() method:
  - special ports are now correctly treated
  - proper deletion of port icons
  - proper handling of node.inputPortsDescr and node.outputPortsDescr
  - proper computing portposx for remaining ports
  - proper renumbering etc for remaining ports
- fixed a bug in items.py when network is refreshed and special ports are shown
  the node menu correctly displays now 'hide special ports'
- fixed items.py buildIcons() method:
  specialPorts buildIcons() method is now called here instead in
  addSpecialPorts() method (before, we would build the icons twice)
- deleted the Port attribute "tags", which was the source of many strange
  problems, for example, after refreshing a network and then moving a node
  would also move port icons of other nodes, SpecialPorts would not move at
  all, and others... this is now fixed
- fixed a bug when exiting with a expanded macro network: Pmw wants to set
  the current network after a network was deleted which would fail here
  since the macro's main network was already deleted from editor.networks.
- fixed bug that caused node to run when asked to by the used if autoRun was 
  False
- commented out checking for new data in run since this will be done anyways
  in computeFunction called by run
- fixed a bug when exiting with a expanded macro network: Pmw wants to set
  the current network after a network was deleted which would fail here
  since the macro's main network was already deleted from editor.networks.
- compeletly rewrote the node.move() command, which is now using the
  network.moveSubGraph method, that also updates connections.
- fixed moveSubGraph() method to update connections when nodes move, added
  new keyword absolute=False, that allows to move the subgraph BY dx,dy or
  TO dx,dy, when absolute=True
- added new method updatePosXPosY() that sets the node's posx and posy
  this method is used in quite a few instances in net.py
- bugfix: node.posx and node.posy were not set correctly. Now, when a node
  is moved, we call node.updatePosXPosY() to set these two attributes
  correctly. We use the upper left coordinate of node.outerBox as posx, posy
- fixed finally the problem we had that nodes move after adding to a network
  when they have widgets bound. There was some very old code in buildNodeIcon
  that moved a node after instanciation, but with wrong values. Fixed this, 
  also set initial posx, posy to 0, moved the 'move' statement from 
  buildIcons to buildNodeIcon where it belongs
- fixed a bug in determining the needed nodesize: if the last port was
  invisible, this would not work properly
- set port attribute width, height to default None, updated this in all files
- changed behaviour of ports so that they now use the new width, height
  defined in datatypes to build port icon; also updated datatypes; we no 
  longer need port shapes 'rect1', 'rect2', etc, but just 'rect' since
  now the user can specify width, height and define the shape. Note:
  currently we continue to support keywords such as 'rect1', but we ask users
  to update their datatypes to use the new scheme
- refreshing a network would add duplicate menu entries to connections pulldown
  menu. Fixed this by implementing a destroyIcon() method in
  NetworkConnection, and in net.py deleteNodes() now calls this method
  properly (instead of just looping over self.connections and set c.id=None)
  as was done previously
- updated special ports to use proper icon size (8x8, not 4x4)
- saving and restoring a node with displayed special ports would fail because
  we did not update the pulldown entry. Fixed this in items.py:
  we now call directly the two methods show/hide special ports, rather than
  calling a callback function. The two methods do implement the proper
  setting of the pulldownmenu; restoring a network with nodes with special
  ports connected would fail because in net.py the connectSpecialNodes()
  method was not updated to find ports by names (instead of numbers)
- fixed yet another bug with special ports: if there was a connection,
  refresh network would not properly restore the connection
- fixed saving nodes with unbound widgets (we now save "nodeX.unbindWidget(.."
  instead of "nodeX.deleteWidget(..."
- fixed identation bug in saving networks which could cause endless loop
- fixed a bug in getNodeSourceCodeForPorts where ports where not properly
  deleted if more than 1 port in a row were deleted
- bugfix in saving widget values: if the value is not of type string, we should
  not put the value in quotes.
- made checking for 'stop' pause' and 'frozen' case insentitive
  (scheduling nodes)
- fixed a bug in node.computeFunction that caused string arguments passed
  to dynamic function to be lower-cased
- changing the data on a port now also updates the Introspect GUI
- fixed a bug in setting the source code: if we use " instead of ' the code
  is no longer loadable. Using string.replace in setFunction()
- fixed a bug in saving source code: since port.getDescr() adds a key
  _previousWidgetDescr if the widget of this port is unbound, this gets passed
  to addInputPort(). Updated this method to accept _previousWidgetDescr and
  add this as an attribute to the port. This allows the port to rebind the
  widget. 
- saving a node with a deleted widget now saves a lines to delete the widget,
  not unbind it
- saving a node with an unbound widget now first saves a line to set the
  widget value to the current value, THEN adds a line to unbind the widget.
  Therefore, after rebinding the widget, one gets the previous value, not the
  default value
- fixed cut/copy/paste problems with nodes inside macro networks that came
  from a node library: these nodes are set _original=True and therefore
  did not generate source code upon cut/copy
  Fixed this problem by adding a new keyword ignoreOriginal=False to the
  signature of getNodeDefinitionSourceCode() which overrides the tests in there
- saving source code of nodes that came from a node libary (like most nodes)
  we now inherit from the original node. This fixes a bug where we would
  loose methods that were defined in the original node.
- Moved updating the source code editor GUI into the setFunction() method
  where it actually should be done. Now, configuring the node with new code
  automatically updates the GUI.
- fixed a bug in copy/paste nodes inside a macro network that came from a
  node library: we copied the nodes but not the connections because we did
  not pass ignoreOriginal=True to the connection.getSourceCode()
  Needed to update methods in macros.py, items.py and net.py
- bugfix: if only the compute function inside a macro node from a node libary
  was modified, we forgot to call the checkIfNodeIsDefined() method to add
  a line to get a handle to this node. This is now fixed.
- the temporary editor attribute _tmpListOfSavedNodes is now an attribute
  of NetworkBuilder. This change was needed to address the issue above.
  Needed to update items.py, macros.py, net.py and simpleNE.py to use this
  new attribute properly
- made list of children nodes unique in scheduleChildren()
- modified node's rename method to avoid quotes in name, which could cause
  problems for saving/restoring and copy/paste
- bugfix: deleting a node with an open widget editor now deletes this editor
- fixed method moveSubGraph which did not move connections properly
- fixed a bug in refreshing a network with nodes with widgets bound to node,
  and the node was expanded. Prior, this would cause the node icon to be
  redrawn compeletly wrong. Fixed this by hiding the widgets in node before
  destroying the node.
- when we delete nodes, we do not want to update the node code signature.
  Fixed this in deleteNodes()
- fixed a bug in deleteNodes() method: We were looping over the ports and
  inside the loop we would delete ports from the list we were looping over.
  This caused all kinds of unpredictable results:
  for example, deleting a node with open editor windows (such as port editor)
  would not always delete these windows.
- net.py: connectNodes now calls port's afterConnect callback BEFORE the node
  is scheduled if data is present on the port
- before and after connection callbacks can now return a new connection.
  This allows these callbacks to replace the connection that has been made
- check for valid callback name when editing port callback
- fixed a bug in deleteConnection(): we could reach a condition where 'conn'
  was undefined. Set conn=None by default.
- prevented macro nodes and MacroInput nodes from executing  when they are
  added to a network (they would execute because they have no inpout ports
  before connections are created).
- made input ports of MacroOutputNode singleConnection='auto' to prevent
  creating a list of objects when there is a single parent
- made stop, run set the execStatus in all macro networks in addition to the
  current network.  This fixes the bug in which stoping a network with an
  iterate in a Macro node would not stop the iteration


Backwards incompatibilities

1) Implemented much better handling of connect and disconnect events. This is
   incompatible with nodes that implement a beforeConnect(), etc method:
  
   Deleted the methods beforeConnect(), afterConnect(), beforeDisconnect() and
   afterDisconnect(). Added four new keywords to Port constructor:
   beforeConnect, afterConnect, beforeDisconnect, afterDisconnect. The value
   for these keywords is a textstring describing the source code for the method
   to be carried out (similar to the node source code). Updated configure()
   method of ports to handle these new keywords. Also, fixed configure()
   methods of ports: the class OutputPort did not use the configure method of
   the base class. Updated connectNodes() and disconnectNodes() methods in 
   net.py to work with these new changes. Exposed these new features in the 
   port editor: one can now use idlelib or a Pmw text editor to edit the
   function.

   Nodes which implement a beforeConnect() etc. method need to be rewritten.
   For an example, please have a look at Vision/StandardNodes.py class ListOf



Release Dezember 17, 2003
-------------------------

What's New (compared to release Sep 18, 2003)

- added try except statments around node instanciation code in saved networks
  This allows restoring networks with problems.
- made connectNodes accept either port numbers or port names. The network
  source code generation now uses the port's naem by default
- added 2 metods to node class getInputPortfromPortFromName and
  getOutputPortfromPortFromName
- added a new getDescr() method for port description
- added a getSourceCode() method in class NetworkConnection
- commented out main menu entries to add/delete categories, to create 
  libraries, to add nodes to libraries. This will be re-activated in a later
  release (once these things work properly)
- added optional argument updateSignature to deletePort method. Was needed for
  runPmvCommand node
- added capability to delete a node proxy icon in a category frame:
  added deleteNodeFromCategoryFrame() method to class NodeLibrary
  This method deletes the icon and calls a new rebuildNodesInCategoryFrame()
  method that first deletes all icons and rebuilds the icons
- added new method deleteSmallIcon() to items.py which deletes the node proxy
  icon in a node library
- added capability to change font of various GUI components:
  - changing the font for node proxies (node icons in node library windows)
  - changing network node fonts now works (using refresh to rebuild icons)
    Note: I do not change balloon font for ports. Don't know if I should or not
  - exposed this functionality in a Form accesible through the Edit menu
- added a ChangeFont form to Forms.py
- editor.font is now a dictionary that contains the fonts descriptions of the
  various gui components, also removed attribute editor.libraryFont because
  this is now stored in editor.font
- added kw 'net=None' to refreshNet_cb() method in items.py
- added new method getLeafNode() to find leaf node in a nested macro
- added a couple more regression tests for load/save macros, delete networks
  with macros
- made network canvas grey75 so white arrows for None type can be seen
- added methods isModified() and resetModifiedTag() to items.py
- users can no longer save a network if it is an instance of a MacroNetwork
  to prevent problems (i.e. saving the macro network but not the main net)
- changed 'Color Node By Library' so that it will also color/uncolor all nodes
  already present in all networks
- changing the datatype of a port now sets the flag self._modifed=True
- changed balloon help in ViPEr so that every GUI element has its own attribute
  'balloons'. This fixes some problems where we have to re-create
  Pmw.Balloon in order to move the yoffset, also this allows us to change
  the font individually
- toolbarbutton.py needed to be updated after this change
- turned multi threading off by default
- enabled changing widget master in Editor
- fixed ParamsForm (widget editor) to only return modified values
- fixed ParamsForm to handle boolean properly
- allow None as a valid entry for int and float type (need for dial and
  thumbwheel min and max)
- added 'Cancel', 'Apply' buttons to widget editor
- made widget editor destroy widget when new widget is built
- added dict of currentValues to widget editor so we only add options that
  are no default values
- added a file browser button to the right of the Entry in the WithFileBrowser
  widgets. This was done because on some Linux machines double-click event are
  somehow lost on the Entry !
- added menu entry 'Unbind Widget' to port menu. Unbinding a widget will
  add menu entry 'Rebind Widget' to port icon. This makes un- & rebinding
  widgets so much easier!
- added type boolean to TypeManager
- modified validation function of data type to return True instead of 1
- made widget background colored
- made widget's label background colored
- added beforeConnect(port1, port2) and afterConnect(conn) methods to node
- changed frozen color to light cyan which helps reading text in nodes
- modified loadNetwork to replace underscores by minus
- added borderwidth=3, relief='sunken' , bg='#c3d0a6' to node.iconMaster


Bug Fixes

- fixed missing applyCmd method in PMW-based code editor
- many fixes in saving macro networks. Fixed indentation of nested macros
- many fixes for saving widgets
- fixed some issues with _previousWidgetDescr
- deleting a port now updates the node source code properly
- fixed problem in saving code for nodes that come from different files
  such as done in the regression tests
- fixed a bug in setting fonts on Windows machines
- fixed deletion of nested macros
- fixed a bug in getLibraryImportCode that would fail if a node has no library
- fixed a bug in the exit_cb that would fail if a macro network is present
  (i.e. red ink when exiting ViPEr)
- fixed a bug in macros where a macro could not be saved/restored if the
  macro name had a space in the name 
- fixed import net from NetworkEditor rather than simpleNE in macros.py
- deleting a network with a macro would not delete the macro-subnetwork
- fixed creating user libraries and adding nodes to these libraries (Note: this
  functionality is currently not exposed to users, wait for next release)
- fixed a bug in deleting networks where sometimes a macro would not delete
  its macro network. The problem was that in the Network.delete() method
  we looped over self.nodes, but subsequently would delete an item from
  self.nodes, which would result in unpredictable results. Simple fix was
  to loop over a copy of this list
- fixed a bug in copy/paste nodes which occured after changes in the
  getLibraryImportCode() method (the signature of this method changed)
- fixed some bugs in scaling nodes:
  - we are now using the current node font rather than a system font when
    scaling (which looked really ugly on some operating systems)
  - show/hide widgets in node works again (sort of, this needs more work, at
    least now it does show and hide the widget rather than raise an exception)
  - resolved many conflicts with tags mixed up: we assigned node.iconMaster
    to ports (port.iconMaster = node.iconMaster). This caused almost
    unreproducible problems after 'refresh' was hit: port icons of nodes would
    move when other nodes were moved, etc
  - 'refresh' is supposed to reset scaling. However, we would use a wrong 
    relposx so port icons would end up in wrong places after refresh. This 
    was solved by calling setPortPosX() in createIcon() in ports.py
  - 'refresh' would not reset the scaled port icons. This was because the 
    node's attribute scaleSum was not reset to 1.0
- creating a macro while the option 'Color Node by Library' was turned on
  would fail. This is now fixed
- fixed unbind / rebind widget in class InputPort. Fixed bugs and made methods
  more clever (show/hide node widgets if specified previously, etc)
- fixed default values for NEDial and NEThumbwheel in widgets.py
- fixed many things in ParamsForm (the widget editor)
- fixed bug which caused specified configuration options to be lost when
  widget was rebuilt. For instance (size=60, type='int') would loose type
- fixed a bug in copy/paste nodes inside a macro network: in the method
  pasteNetwork_cb() where we execute the code object, we have to pass 'net' for
  self, rather than 'self'
- fixed a bug in cutting selected nodes, where the Cut and Copy buttons would
  remain active and thus give the user the ability to overwrite the current
  paste_buffer with an empty list. Cutting now disables the Cut and Copy
  buttons
- fixed a bug in pasting nodes when all networks were deleted. The Paste button
  still remains active if there is data in the paste buffer, but no exception
  will be raised if the button is pressed and no network is present.
- fixed a bug in cut&copy nodes to prevent these operations on Macro Input-
  and Output Nodes of Macro Networks. One can now safely "Select All" nodes
  in a macro network and cut/copy them without copying these two nodes (which
  will get automatically deselected now upon cut/copy)
  Cut/Copy/Paste of Macro nodes of course still works as before
- fixed bug that caused new nodes added to a frozen network not to be frozen
- fixed a bug in widthFirstChildren
- fixed bug in connectNodes. Port descr was assumed to have datatype key.

Backwards compatible Changes (renaming of methods, attributes)

- renamed method setPortPos() to setPortPosX()
- renamed attribute modified to _modified, changed value to Boolean
- changed in macro networks how macroinput and macrooutput node are saved
- changed method getNodeDefinitionSourceCode() in MacroNode, split this in 
  two halfes, main work is now done in MacroNode.getNodeSourceCode()
- major overhaul of saving networks: changed the signature of all methods
  involved in producing source code for saving networks
- changed again how networks are saved. Everything is much easier now, because
  we add the code to import all necessary libraries at the very beginning.
  Macro Nodes need no longer to save a beforeAddingToNetwork() method, they
  no longer have to loop over all ports to import libraries that are needed
  for port data types, and they don't have to import the libraries again in
  their afterAddingToNetwork() methods since this is now done at the beginning
  etc, etc, etc. Removed getLibraryImportCodeHeader method, removed
  self.libraryImportCache
- moved deletePort() method from items to itemBase. Subclass this method in
  items and in macros


Backwards INCOMPATIBLE Changes

- split addLibrary method of Network into addLibraryFromName and
  addLibraryInstance. Addind an instance now requires to provide the module
  where the instance is defined and the name (both as strings). This was needed
  to generate the network descdription source code with the correct imports of
  libraries.
  - getLibraryImportCode was fixed in net.py and added to MacroNetwork
    (macros.py)
  - updated node libraries to reflect these changes

Suggested Fix for users:
Search and replace 'addLibrary' in existing saved networks with either
'addLibraryFromName' or addLibraryInstance'

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



Release November 25, 2002
-------------------------

What's New

- every node now has its own param. panel. The param. panel has now an
  'immediate' checkbutton (on by default: this triggers node execution upon
  value changes of widgets in the param. panel), an apply button, which forces
  node execution, and a dismiss button to hide the param. panel
- added multi-threaded execution model and added a lock and condition to the
  network object such that iterate nodes can schedule the excution of
  sub-networks for each value in their list
- added support for cut, copy and paste nodes and connections
- added selectAll (nodes) functionality
- added mechanism to dynamically load libaries
- StandardNodes are now part of the NetworkEditor
- added new nodes to StandardNodes: ScrolledText, Multi-Checkbuttons, 
  ChangeBackground (to change the background color of the ViPEr canvas,
  call method, getattr, setattr, len, iterate
- added more documentation to many nodes
- added support for moving nodes by clicking and dragging with middle button.
  When middle button is pressed on top of a node, this node becomes
  temporarly selected and can be moved until the button is released.
  When the button is released, the selection is restored.
- added the ability to show/hide widgets in nodes by double clicking on the
  node.
- added ability to reshape connections using left mouse button
- runNodes checks whether new data is provided on at least 1 input port
  before executing node. This can be overruled by setting the new 
  forceExecution flag. Inputports now know whether they have new data.
- scaling nodes scales the label and hides widgets when node is too small
- added eventHandler
- added new menus to simpleNE, changed old ones
- regression tests were added


Bug Fixes

- data viewer windows are now destroyed when the corresponding node is deleted
- loading and saving networks was completely reworked
- many issues in Editor.py were adressed and fixed
- nodes now resize according to the ports, the label and the widgets
- picking on node has now priority over picking on connections
- refresh now restores the highlighting of the selected nodes
- fixed bug that was not putting widgets in node to the proper location
- moved ballons help down 30 pixels, to avoid flashing when balloon appeared
  over node
- fixed bug that caused widget value to disappear after show/hide/show.


Compatibility Information

- multi-threaded execution on Silicon Graphics platforms can lead to core 
  dump. Therefore, the user can choose to run single-threaded execution
  which works fine on SGI.


Known Issues

- saving networks with macro nodes does not work currently. This will be fixed
  as soon as possible
- Undo is disabled since it is currently broken
- Hyperbolic Scaling was removed from the menu since this was never working
  properly
- removed show special ports entry from menu nodes as it is broken