Asset picker in a Scene?

[Sebastian]

Is it possible to use the asset picker within a scene.Scene (the thing that opens from the editor when you tap the '+' button)? Or do I need to create my own as a ui.View?

Edit:
Autocompletion errors.

[omz]

There is no Python API for showing the asset picker, I'm afraid.

[Sebastian]

In that case, I guess I'll write my own. Is there a way of getting all the assets' names in a list or something?

[JonB]

try:
json.load(open(os.path.abspath(os.path.join(os.file,'../../Media/Collections.json'))))['collections']

which is a list of dicts. The path key is relative to the Media folder above.

[Sebastian]

I forgot to post a reply on this thread. Here's my take on an AssetPicker using the UI module. Hope someone can test it to make sure it works on other people's devices.
PS: I know the code looks horrible 😝

# coding: utf-8

import os
import json

import ui
import scene
import Image

def get_asset_folder():
	return os.path.dirname(scene.get_image_path('emj:Airplane'))[:-10]
	
def get_collection_info(asset_type=''):
	folder = get_asset_folder()
	with open(folder+os.listdir(folder)[0], 'r') as f:
		return [asset for asset in json.load(f)['collections'] if asset['type'] == asset_type]


class AssetPicker (ui.View):
	def __init__(self, source, name='', dark_cells=False, object_type='none', parent=None):
		w, h = ui.get_screen_size()
		self.frame = (0, 0, w, h)
		self.name = name
		self.source = source
		self.dark_cells = dark_cells
		self.parent = parent
		self.object_type = object_type
		self.picked_asset = None
		self.load_button_items()
		self.create_table_view()
		
	def is_main(self):
		return all([1 if isinstance(i, dict) else 0 for i in self.source])
		
	def load_button_items(self):
		if self.is_main():
			self.left_button_items = [ui.ButtonItem('Cancel', action=lambda s: self.navigation_view.close())]
		else:
			self.right_button_items = [ui.ButtonItem('Done', action=lambda s: self.navigation_view.close())]
		
	def create_table_view(self):
		table_view = ui.TableView()
		table_view.name = 'tableview'
		table_view.flex = 'WH'
		table_view.width = self.width
		table_view.height = self.height
		table_view.delegate = self
		table_view.data_source = self
		self.add_subview(table_view)
		
	def tableview_number_of_rows(self, tableview, section):
		return len(self.source)
	
	def tableview_cell_for_row(self, tableview, section, row):
		cell = ui.TableViewCell('subtitle')
		cell.accessory_type = 'disclosure_indicator'
		if self.is_main():
			text = self.source[row]['title']
			cell.text_label.text = text
			if 'copyright' in self.source[row]:
				cell.detail_text_label.text = self.source[row]['copyright']
		else:
			cell.text_label.text = self.source[row]
			tableview.row_height = 48
			cell.image_view.image = ui.Image.named(self.source[row])
			if self.dark_cells:
				cell.image_view.background_color = 'black'
		return cell
		
	def tableview_did_select(self, tableview, section, row):
		if not self.is_main():
			if self.parent:
				pass
				# do something with asset
			# example:
			Image.open(self.source[row]).show()
			self.navigation_view.close()
			return
			
		path = os.path.join(get_asset_folder(), self.source[row]['path'])
		if not os.path.isdir(path):
			with open(path, 'r') as f:
				source = eval(f.read())
		else:
			source = sorted(list(set([path.split('/')[-1]+':'+(i.split('@')[0] if '@' in i else i.split('.')[0]) for i in os.listdir(path)])))
		dark_cells = 1 if 'darkBackground' in self.source[row] else 0
		self.navigation_view.push_view(AssetPicker(source, name=self.source[row]['title'], dark_cells=dark_cells, object_type=self.object_type, parent=self.parent))


def present(parent=None, object_type='none', *args, **kwargs):
	source = get_collection_info(asset_type='image')
	main_view = AssetPicker(source, name='Assets', object_type=object_type, parent=parent)
	nav_view = ui.NavigationView(main_view)
	nav_view.present(*args, **kwargs)
	
if __name__ == '__main__':
	present(hide_title_bar=True)

[shaun-h]

@Sebastian it looks good on my iPhone 6Plus are you happy for me to use this code in a project I'm working on? Is this code on GitHub or just posted to the forum?

[Sebastian]

@shaun-h Go ahead and use it! I just posted it here in case any of you guys needed it 😄 I use it for my own project as well!
Now I'm curious! What kind of project are you working on? If you don't mind me asking 😋

[shaun-h]

Not at all, I put a post up a few days ago about it here
it is basically a workflow application for pythonista, you can have a read about it on the GitHub page
I am still adding lots of elements to it and the structure of those might change soon when I actually implement parameters, but just so you are aware I was thinking about using it to pick the icon on the creation of an element when I get around to creating the proper ui to create them.

[Sebastian]

Oh cool! I guess this can be used for a lot of different things. I use it in a level editor for a platformer game I'm developing. 😋