Edward -- these are really useful improvements!
I have the latest build and am testing out the new commands. Clone Find
All Flattened is really useful. I am using a combination of Tags and
Icons to track open and closed tasks.
Here's an example of one script to mark a node as an open task...
@language python
''' add the tags "open" and "todo" to the node, then add an icon '''
tc = c.theTagController
tag = 'open'
tag2 = 'todo'
tc.add_tag(p.copy(), tag)
tc.add_tag(p.copy(), tag2)
table = (
'chkboxblk.png',
)
for icon in table:
fn = g.os_path_finalize_join(g.app.loadDir,
'..', 'Icons', 'cleo', icon)
if g.os_path_exists(fn):
c.editCommands.insertIconFromFile(path=fn)
What I'd like to do next is to use the Clone Find All Flattened command to
find all my Nodes which are "open tasks", and would appreciate any
suggestions from others as to how to accomplish. Ideally, these would be
shown in context with the parent tags down to the "found" tags, but that
might be a more involved evolutionary coding step.
-Richard
On Thursday, February 25, 2016 at 4:12:52 AM UTC-8, Edward K. Ream wrote:
>
> Writing the cffm and cfam commands was snap using c.cloneFindByPredicate,
> a powerful new addition to Leo. Here is the entire code for the new
> commands:
>
> @cmd('clone-find-all-marked')
> @cmd('cfam')
> def cloneFindAllMarked(self, event=None):
> '''The clone-find-all-marked command.'''
> self.cloneFindMarkedHelper(flatten=False)
>
> @cmd('clone-find-all-flattened-marked')
> @cmd('cffm')
> def cloneFindAllFlattenedMarked(self, event=None):
> '''The clone-find-all-flattened-marked command.'''
> self.cloneFindMarkedHelper(flatten=True)
>
> def cloneFindMarkedHelper(self, flatten):
> '''Helper for clone-find-marked commands.'''
>
> def isMarked(p):
> return p.isMarked()
>
> self.cloneFindByPredicate(
> generator = self.all_unique_positions,
> predicate = isMarked,
> flatten = flatten,
> undoType = 'clone-find-marked',
> )
>
> It's hard to imagine anything simpler. *Important*: the predicate could
> filter on an attribute or *combination *of attributes. For example, the
> predicate could return p has attributes A and B but *not* attribute C.
> Instantly we have full database query capabilities. If we then hoist the
> resulting node we see *all and only* those nodes satisfying the query.
>
> Here is c.findNodeByPredicate. *Important*: Rev c8a3581c9b corrects a
> serious blunder in c.cloneFindByPredicate. Don't use previous versions!
>
> def cloneFindByPredicate(self,
> generator, # The generator used to traverse the tree.
> predicate, # A function of one argument p, returning True
> # if p should be included in the results.
> flatten=False, # True: Put all matches at the top level.
> undoType=None, # The undo name, shown in the Edit:Undo menu.
> # The default is 'clone-find-predicate'
> ):
> '''
> Traverse the tree given using the generator, cloning all positions
> for which predicate(p) is True. Undoably move all clones to a new
> node, created as the last top-level node. Arguments:
>
> generator, The generator used to traverse the tree.
> predicate, A function of one argument p returning true if
> p should be included.
> flatten=False, True: Move all node to be parents of the root node.
> undo_type=None, The undo/redo name shown in the Edit:Undo menu.
> The default is 'clone-find-predicate'
> '''
> c = self
> u, undoType = c.undoer, undoType or 'clone-find-predicate'
> clones, seen = [], set(),
> for p in generator():
> if predicate(p) and p.v not in seen:
> if flatten:
> seen.add(p.v)
> else:
> for p2 in p.self_and_subtree():
> seen.add(p2.v)
> clones.append(p.copy())
> if clones:
> undoData = u.beforeInsertNode(c.p)
> root = c.createCloneFindPredicateRoot(flatten, undoType)
> # This was botched in previous versions.
> # The result was low-level vnode failures.
> for p in clones:
> clone = p.clone()
> clone.moveToLastChildOf(root)
> u.afterInsertNode(root, undoType, undoData, dirtyVnodeList=[])
> c.selectPosition(root)
> c.setChanged(True)
> c.redraw()
> else:
> g.es_print('not found:', undoType)
>
> Imo, this is the dawn of a new era in Leo's database capabilities.
>
> Edward
>
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