add preview support (remote conversion to pdf)

Addons.xcu.in

@@ -81,7 +81,6 @@
           </prop>
         </node>
 
-
         <node oor:name="m8" oor:op="replace">
           <prop oor:name="URL" oor:type="xs:string">
             <value>service:org.entrouvert.openoffice.StructureCheckDialog</value>
@@ -100,6 +99,26 @@
             <value>com.sun.star.text.TextDocument</value>
           </prop>
         </node>
+
+        <node oor:name="m9" oor:op="replace">
+          <prop oor:name="URL" oor:type="xs:string">
+            <value>service:org.entrouvert.openoffice.Preview</value>
+          </prop>
+          <prop oor:name="ImageIdentifier" oor:type="xs:string">
+            <value/>
+          </prop>
+          <prop oor:name="Title" oor:type="xs:string">
+            <value>Preview</value>
+            <value xml:lang="fr-FR">Prévisualisation</value>
+          </prop>
+          <prop oor:name="Target" oor:type="xs:string">
+            <value>_self</value>
+          </prop>
+          <prop oor:name="Context" oor:type="xs:string">
+            <value>com.sun.star.text.TextDocument</value>
+          </prop>
+        </node>
+
       </node>
 
       <node oor:name="Tabellio.Listes" oor:op="replace">

addon/Tabellio.py

@@ -959,6 +959,43 @@ class ConfigurationDialog(unohelper.Base, XJobExecutor):
             print 'exception:', e, str(e)
 
 
+class Preview(unohelper.Base, XJobExecutor):
+    def __init__(self, ctx):
+        self.ctx = ctx
+
+    def trigger(self, args):
+        ctx = self.ctx
+        try:
+            smgr = self.ctx.ServiceManager
+
+            desktop = smgr.createInstanceWithContext(
+                    'com.sun.star.frame.Desktop', self.ctx )
+            doc = desktop.getCurrentComponent()
+
+            # saving odt to local file
+            temp_file = os.path.join(tempfile.gettempdir(), 'preview.odt')
+            doc.storeToURL(unohelper.systemPathToFileUrl(temp_file), ())
+
+            href = 'http://tabellio.entrouvert.com/preview/'
+
+            s = urllib2.urlopen(href, data = file(temp_file).read()).read()
+            temp_pdf_file = os.path.join(tempfile.gettempdir(), 'preview.pdf')
+            file(temp_pdf_file, 'w').write(s)
+
+            # XXX: this should be generalised instead of using some special
+            # knowledge about platforms
+            if os.name == 'posix':
+                os.system('see %s &' % temp_pdf_file)
+            else:
+                os.system('start file://%s' % temp_pdf_file)
+
+            # XXX: clean up files
+
+        except Exception, e:
+            print 'exception:', e, str(e)
+
+
+
 g_ImplementationHelper = unohelper.ImplementationHelper()
 
 g_ImplementationHelper.addImplementation(
@@ -1006,3 +1043,8 @@ g_ImplementationHelper.addImplementation(
     "org.entrouvert.openoffice.ConfigurationDialog",
     ("com.sun.star.task.Job",))
 
+g_ImplementationHelper.addImplementation(
+    Preview,
+    "org.entrouvert.openoffice.Preview",
+    ("com.sun.star.task.Job",))
+

server/preview_server.py

@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+#
+# preview_server - SCGI server providing preview of ODF files
+# Copyright (C) 2007  Frederic Peters
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+import sys
+import os
+from optparse import OptionParser
+from scgi.scgi_server import SCGIServer, SCGIHandler
+import cgi
+
+class PreviewHandler(SCGIHandler):
+    debug = False
+
+    def handle_connection(self, conn):
+        input = conn.makefile('r')
+        output = conn.makefile('w')
+        env = self.read_env(input)
+        bodysize = int(env.get('CONTENT_LENGTH', 0))
+        try:
+            self.produce(env, bodysize, input, output)
+        finally:
+            output.close()
+            input.close()
+            conn.close()
+
+    def produce(self, env, bodysize, input, output):
+        uri = env.get('REQUEST_URI')[9:]
+        if self.debug:
+            print 'uri:', uri
+            print 'bodysize:', bodysize
+
+        if bodysize == 0:
+            print >> output, 'Content-type: text/plain'
+            print >> output, ''
+            print >> output, 'this server only supports POST'
+
+        odf_file = input.read(bodysize)
+
+        # XXX: add conversion to PDF here
+
+        pdf_file = file('unconfigured.pdf').read()
+        print >> output, 'Content-type: application/pdf'
+        print >> output, 'Content-length: %s' % len(pdf_file)
+        print >> output, ''
+        print >> output, pdf_file
+
+def main():
+    parser = OptionParser()
+    parser.add_option('-p', '--port', dest = 'port', type='int', default = 2151)
+    parser.add_option('--debug', action = 'store_true', dest = 'debug')
+    options, args = parser.parse_args()
+
+    PreviewHandler.debug = options.debug
+    SCGIServer(handler_class = PreviewHandler, port = options.port).serve()
+
+if __name__ == '__main__':
+    main()
+