def annotate_sequence(request, id):
"""
Like edit_sequence, but only allows you to change the annotations,
not the chord sequence. Supplies an automatic annotation that you
can choose to apply selectively to the sequence.
"""
sequence = get_object_or_404(ChordSequence, id=id)
raise NotImplementedError, "Don't use this for now: the JP has changed and this needs to be updated"
#### Do the automatic tagging
chords = list(sequence.iterator())
# Get the default grammar
grammar = Grammar(jpsettings.DEFAULT_GRAMMAR)
tagger = TrigramAnnotatorChordTagger('alpha', grammar, chords)
tagger_output = tagger.tag_input()
if request.method == "POST":
if 'cancel' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
# Save the data
form = ChordSequenceForm(instance=sequence, data=request.POST)
chord_forms = [ChordAnnotationForm(chord, tag, prefix="chord%s"%chord.id, data=request.POST) for chord,tag in zip(chords,tagger_output)]
# Check every chord form validates
chords_valid = reduce(lambda so_far, chord: so_far and chord.is_valid(), chord_forms, True)
if form.is_valid() and chords_valid:
form.save()
# This view can only change the annotations on a sequence
for cf in chord_forms:
cf.save()
if 'save_and_exit' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
return HttpResponseRedirect(reverse(annotate_sequence, kwargs={ 'id' : sequence.id }))
else:
form = ChordSequenceForm(instance=sequence)
# Prepare a form for each chord
chord_forms = [ChordAnnotationForm(chord, tag, prefix="chord%s"%chord.id) for chord,tag in zip(chords,tagger_output)]
# Calculate the width the sequence needs to be
annotator_width = sum([cf.layout_width+7 for cf in chord_forms])
if len(chord_forms):
first_field = chord_forms[0].prefix
else:
first_field = None
context = {
'sequence' : sequence,
'form' : form,
'chord_forms' : chord_forms,
'categories' : category_pairs,
'annotator_width' : annotator_width,
'first_field' : first_field,
}
return render_to_response('sequences/annotate_sequence.html', context, RequestContext(request))
def edit_sequence(request, id):
if id is None:
sequence = ChordSequence()
song = Song()
sequence.song = song
else:
sequence = get_object_or_404(ChordSequence, id=id)
song = sequence.song
if request.method == "POST":
if 'cancel' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
# Save the data
form = ChordSequenceForm(instance=sequence, data=request.POST)
song_form = SongForm(instance=song, prefix="song", data=request.POST)
if form.is_valid():
# See whether a song was selected
if form.cleaned_data['song'] is not None and \
(sequence.song is None or
form.cleaned_data['song'].id != sequence.song.id):
# A song has been selected for a new sequence or
# the song has been changed
# Use the selected song
form.save()
else:
if form.cleaned_data['song'] is None:
# The song was set to empty, so these details
# should be saved as a new song
song_form = SongForm(prefix="song", data=request.POST)
# We need to validate the song details
if song_form.is_valid():
saved_song = song_form.save()
saved_seq = form.save()
saved_seq.song = saved_song
saved_seq.save()
# First, keep a list of all the chords that were in the sequence before
old_chords = get_chord_list_from_sequence(sequence)
# Handle the chord sequence data
chord_dataset = json.loads(request.POST['chords'])
chords = []
for chord_data in chord_dataset:
chords.append(_save_chord_from_data(chord_data, sequence))
# Now they're saved, chain the sequence together
for i,chord in enumerate(chords):
if i < len(chords)-1:
chord.next = chords[i+1]
else:
chord.next = None
chord.save()
if len(chords):
sequence.first_chord = chords[0]
else:
sequence.first_chord = None
sequence.save()
# Clean up any chords that have been deleted
new_chords = get_chord_list_from_sequence(sequence)
for old_chord in old_chords:
if old_chord not in new_chords:
# Chord has been removed from the sequence - delete it
to_delete = Chord.objects.get(id=old_chord)
to_delete.delete()
if 'save_and_exit' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
return HttpResponseRedirect(reverse(edit_sequence, kwargs={ 'id' : sequence.id }))
else:
form = ChordSequenceForm(instance=sequence)
song_form = SongForm(prefix="song", instance=song)
chord_form = ChordForm()
chord_editor_options = json.dumps({
'bars_across' : 4,
'width' : 1000,
'bar_length' : sequence.bar_length,
})
chord_data = sequence.to_json()
chord_types = [( type.id, type.symbol ) for type in ChordType.objects.all()]
context = {
'sequence' : sequence,
'form' : form,
'song_form' : song_form,
'chord_form' : chord_form,
'chord_data' : chord_data,
'chord_editor_options' : chord_editor_options,
'chord_roots' : _root_choices,
'chord_types' : chord_types,
'categories' : category_pairs,
'pos_tags' : pos_tags,
}
return render_to_response('sequences/edit_sequence.html', context, RequestContext(request))
def annotate_sequence(request, id):
"""
Like edit_sequence, but only allows you to change the annotations,
not the chord sequence. Supplies an automatic annotation that you
can choose to apply selectively to the sequence.
"""
sequence = get_object_or_404(ChordSequence, id=id)
raise NotImplementedError, "Don't use this for now: the JP has changed and this needs to be updated"
#### Do the automatic tagging
chords = list(sequence.iterator())
# Get the default grammar
grammar = Grammar(jpsettings.DEFAULT_GRAMMAR)
tagger = TrigramAnnotatorChordTagger('alpha', grammar, chords)
tagger_output = tagger.tag_input()
if request.method == "POST":
if 'cancel' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
# Save the data
form = ChordSequenceForm(instance=sequence, data=request.POST)
chord_forms = [
ChordAnnotationForm(chord,
tag,
prefix="chord%s" % chord.id,
data=request.POST)
for chord, tag in zip(chords, tagger_output)
]
# Check every chord form validates
chords_valid = reduce(
lambda so_far, chord: so_far and chord.is_valid(), chord_forms,
True)
if form.is_valid() and chords_valid:
form.save()
# This view can only change the annotations on a sequence
for cf in chord_forms:
cf.save()
if 'save_and_exit' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
return HttpResponseRedirect(
reverse(annotate_sequence, kwargs={'id': sequence.id}))
else:
form = ChordSequenceForm(instance=sequence)
# Prepare a form for each chord
chord_forms = [
ChordAnnotationForm(chord, tag, prefix="chord%s" % chord.id)
for chord, tag in zip(chords, tagger_output)
]
# Calculate the width the sequence needs to be
annotator_width = sum([cf.layout_width + 7 for cf in chord_forms])
if len(chord_forms):
first_field = chord_forms[0].prefix
else:
first_field = None
context = {
'sequence': sequence,
'form': form,
'chord_forms': chord_forms,
'categories': category_pairs,
'annotator_width': annotator_width,
'first_field': first_field,
}
return render_to_response('sequences/annotate_sequence.html', context,
RequestContext(request))
def reannotate_sequence(request, id, new=False):
"""
Takes the chords from an old sequence and allows a new version of it to
be created with alternative annotations.
"""
sequence = get_object_or_404(ChordSequence, id=id)
song = sequence.song
if request.method == "POST":
if 'cancel' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
# Check there's the same number of chords
# We will ignore any changes to the chords themselves
chord_dataset = json.loads(request.POST['chords'])
if len(sequence) != len(chord_dataset):
raise ValidationError, "You can't edit the chord sequence "\
"through this page"
# Update the annotations from the form data
chords = []
for chord_data, chord in zip(chord_dataset, sequence.iterator()):
chord.category = chord_data['category']
chord.save()
# And the treeinfo fields
tree = chord.treeinfo
if 'coord_resolved' in chord_data and chord_data[
'coord_resolved']:
tree.coord_resolved = True
tree.save()
elif tree.coord_resolved:
tree.coord_resolved = False
tree.save()
if 'coord_unresolved' in chord_data and chord_data[
'coord_unresolved']:
tree.coord_unresolved = True
tree.save()
elif tree.coord_unresolved:
tree.coord_unresolved = False
tree.save()
chords.append(chord)
if 'save_and_exit' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
return HttpResponseRedirect(
reverse('reannotate', args=(sequence.id, )))
else:
form = ChordSequenceForm(instance=sequence)
if new:
chords = list(sequence.iterator())
# Create a copy of this sequence
sequence.id = None
# Clear notes and omissions, so we don't give any clues to bias
sequence.notes = ''
sequence.omissions = ''
sequence.save()
# Copy each chord
# Clear annotations to start afresh
for chord in chords:
chord.id = None
chord.sequence = sequence
chord.category = ''
chord.save()
# Chain together these chords
previous_chord = chords[0]
for chord in chords[1:]:
previous_chord.next = chord
previous_chord.save()
previous_chord = chord
chords[-1].next = None
chords[-1].save()
sequence.first_chord = chords[0]
# Mark this as an alternative annotation
sequence.alternative = True
sequence.save()
# Go to the editor page for this new sequence
return HttpResponseRedirect(reverse('reannotate',
args=(sequence.id, )))
chord_form = ChordForm(readonly=True)
chord_editor_options = json.dumps({
'bars_across': 4,
'width': 1000,
'bar_length': sequence.bar_length,
'vertical_offset': 280,
})
chord_data = sequence.to_json()
chord_types = [(type.id, type.symbol) for type in ChordType.objects.all()]
context = {
'sequence': sequence,
'form': form,
'song_form': None,
'chord_form': chord_form,
'chord_data': chord_data,
'chord_editor_options': chord_editor_options,
'chord_roots': _root_choices,
'chord_types': chord_types,
'categories': category_pairs,
'pos_tags': pos_tags,
'hidenotes': True,
}
return render_to_response('sequences/reannotate_sequence.html', context,
RequestContext(request))
def edit_sequence(request, id):
if id is None:
sequence = ChordSequence()
song = Song()
sequence.song = song
else:
sequence = get_object_or_404(ChordSequence, id=id)
song = sequence.song
if request.method == "POST":
if 'cancel' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
# Save the data
form = ChordSequenceForm(instance=sequence, data=request.POST)
song_form = SongForm(instance=song,
prefix="song",
data=request.POST)
if form.is_valid():
# See whether a song was selected
if form.cleaned_data['song'] is not None and \
(sequence.song is None or
form.cleaned_data['song'].id != sequence.song.id):
# A song has been selected for a new sequence or
# the song has been changed
# Use the selected song
form.save()
else:
if form.cleaned_data['song'] is None:
# The song was set to empty, so these details
# should be saved as a new song
song_form = SongForm(prefix="song", data=request.POST)
# We need to validate the song details
if song_form.is_valid():
saved_song = song_form.save()
saved_seq = form.save()
saved_seq.song = saved_song
saved_seq.save()
# First, keep a list of all the chords that were in the sequence before
old_chords = get_chord_list_from_sequence(sequence)
# Handle the chord sequence data
chord_dataset = json.loads(request.POST['chords'])
chords = []
for chord_data in chord_dataset:
chords.append(_save_chord_from_data(chord_data, sequence))
# Now they're saved, chain the sequence together
for i, chord in enumerate(chords):
if i < len(chords) - 1:
chord.next = chords[i + 1]
else:
chord.next = None
chord.save()
if len(chords):
sequence.first_chord = chords[0]
else:
sequence.first_chord = None
sequence.save()
# Clean up any chords that have been deleted
new_chords = get_chord_list_from_sequence(sequence)
for old_chord in old_chords:
if old_chord not in new_chords:
# Chord has been removed from the sequence - delete it
to_delete = Chord.objects.get(id=old_chord)
to_delete.delete()
if 'save_and_exit' in request.POST:
return HttpResponseRedirect(reverse(index))
else:
return HttpResponseRedirect(
reverse(edit_sequence, kwargs={'id': sequence.id}))
else:
form = ChordSequenceForm(instance=sequence)
song_form = SongForm(prefix="song", instance=song)
chord_form = ChordForm()
chord_editor_options = json.dumps({
'bars_across': 4,
'width': 1000,
'bar_length': sequence.bar_length,
})
chord_data = sequence.to_json()
chord_types = [(type.id, type.symbol) for type in ChordType.objects.all()]
context = {
'sequence': sequence,
'form': form,
'song_form': song_form,
'chord_form': chord_form,
'chord_data': chord_data,
'chord_editor_options': chord_editor_options,
'chord_roots': _root_choices,
'chord_types': chord_types,
'categories': category_pairs,
'pos_tags': pos_tags,
}
return render_to_response('sequences/edit_sequence.html', context,
RequestContext(request))
