Editorial Workflow — Sidebar Preview

Run Python Script ?
Source Code
#coding: utf-8
import ui
import editor

# Used to make links open in the browser panel:
class WebViewDelegate (object):
	def webview_should_start_load(self, webview, url, nav_type):
		if nav_type == 'link_clicked':
			import webbrowser
			webbrowser.open(url)
			return False
		return True
		
class SidebarView (ui.View):
	@ui.in_background
	def refresh(self):
		if not self.active:
			# Sidebar was already closed, don't refresh anymore
			return
		# Import these again because it's possible that another
		# script has run in the meantime:
		import ui, editor
		import markdown2
		text = editor.get_text()
		# Only refresh if the text has changed since last time:
		if text != self.current_text:
			html = markdown2.markdown(text)
			if self.first_run:
				# In the first run, just load the template...
				html = '<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><style>body {font-family:helvetica; font-size: 16px;}h1 {font-size: 24px;} h2 {font-size: 22px;} h3 {font-size: 20px*;}</style></head><body><div id="content">Loading...</div><div style="height:400px"></div></body></html>'
				self['webview1'].load_html(html)
			else:
				# ...afterwards, replace the HTML via JavaScript, so that the
				# scroll position is preserved:
				html = html.replace('"', '\\"').replace('\n', '\\n')
				js = 'document.getElementById("content").innerHTML = "%s";' % html
				self['webview1'].evaluate_javascript(js)
				self.current_text = text
		ui.delay(self.refresh, 0.5 if self.first_run else 2.5)
		self.first_run = False
	
	def did_load(self):
		self.active = True
		self.first_run = True
		self.current_text = ''
		self.refresh()
	
	def will_close(self):
		self.active = False

def main():
	import platform
	if not platform.machine().startswith('iPad'):
		import console 
		console.alert('iPad Required',
			            'Sorry, this workflow is designed for iPad only.', 'OK',
			            hide_cancel_button=True)
		return
	v = ui.load_view()
	v['webview1'].delegate = WebViewDelegate()
	v.present('sidebar')

main()
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