Setting name for composer template using PyQGIS?

Question

This scripts works fine for me, but every time its called, a new composer-template is created (Composer 1, Composer2 etc). If the user saves the project, also the composers are saved and the list grows up...

So I want to remove the new item OR name it, so only one of them is in the list:

from qgis.PyQt.QtXml import QDomDocument
from qgis import gui

scale = 10000
templateFile='c:/1temp/mylayout.qpt'
activetool = 15# 'MoveItemContent'

composerview = iface.createNewComposer()
#load template
f= file(templateFile, 'r')
templateContent = f.read()
f.close()
doc=QDomDocument()
doc.setContent(templateContent)
composerview.composition().loadFromTemplate(doc)
#show composer
composerview.show()
#setup map
map = composerview.composition().getComposerMapById(0)#QgsComposerMap
#extent
map.zoomToExtent(iface.mapCanvas().extent())
#scale
if scale >0:
    map.setNewScale(int(scale))
#set activetool
if activetool is not None and activetool<>'':
    composerview.setCurrentTool(gui.QgsComposerView.Tool(activetool))
#finally
composerview.composition().refreshItems()

Answer 1

It basically breaks down to setting windowTitle of the element, what is a property inherited from QWidget. Methods are setWindowTitle and windowTitle as described in the docs. More complete example below:

# Get composer file contents
path = '' # path to .qpt file
with open(path, 'rt') as f:
    content = f.read()

# Load the content into new Composer element
myDocument = QDomDocument()
myDocument.setContent(content)
newComposition = self.iface.createNewComposer()
newComposition.composerWindow().setWindowTitle('My composition') # <-- set the name here
newComposition.composition().loadFromTemplate(myDocument)

# Access available compositions
composers = self.iface.activeComposers()
for item in composers:
    if item.composerWindow().windowTitle() == 'My composition':
        doSomething(item)

Answer 2

I solved this problem for myself like this: def getComposerByName(self, composerName): composers = self.iface.activeComposers() for composer in composers: if composer.composerWindow().windowTitle() == composerName: return composer

... composer = getComposerByName(self, 'myComposer') if composer is None: composer = self.iface.createNewComposer('myComposer') composer.composerWindow().show() ...