<fix> <user layer>: compatible with Zotero 6.0 and make preview windo…

…w focus in Linux

//
<zoteroquicklook.pl> a bug fix that preventing the new sushi preview window from losing window focus
<.gitignore> ignore .xpi/.zoteroplugin files for version management
<linux_build.sh> add shell script to perform auto-pack for .xpi plugin, compatiale with Zotero 6.0
<README.md> modify installing section and the part description of non-Windows system
        1) installation note for zotero 6.0
        2) add path check for quicklook application
        3) Gnome Suhi installation guide
<.rdf> update zotero6.0 version support and update plugin version numbers to 1.4.3
<TODO> list Bugs/Low-priority bugs/Ideas
//
Close mronkko#44, mronkko#43

.gitignore

@@ -1,2 +1,4 @@
 builds
-github.token
+github.token
+*.xpi
+*.zoteroplugin

README.md

@@ -11,19 +11,32 @@ This plugin is not currently being actively maintained. It may not work with cur
 
 To install ZoteroQuickLook, download the latest version of `zoteroquicklook.zoteroplugin` from the Releases section of this GitHub repo. In **Zotero** (not in Firefox), open Tools -> Add-ons. Then drag the `zoteroquicklook.zoteroplugin` file onto the Zotero Add-ons window.
 
+Note for __Zotero 6.0__: Replace `zoteroquicklook.zoteroplugin` above, download `zoteroquicklook.xpi` from te Release section then follow the instructions above.
+
 ## Installing on Mac
-On Mac, ZoteroQuickLook uses macOS's native QuickLook functionality. No additional steps are needed.
+On Mac, ZoteroQuickLook uses macOS's native QuickLook functionality. Check path `/usr/bin/qlmanage` and make sure it exists. No additional steps are needed.
 
 ## Installing on Linux
 
-On Linux, you must install [Gloobus-Preview](https://launchpad.net/gloobus-preview), a QuickLook-like preview software. On Ubuntu you can do this by running the following commands in terminal:
+On Linux, considering that __Gloobus-Preview__ is unmaintained now, it is recommanded to install __Gnome Sushi__ as the QuickLook preview software first. Run the command below to install it in terminal:
+
+```
+sudo apt install gnome-sushi # Debian User
+run sudo dnf install sushi # Fedora User
+```
+
+After the installation is complete, check path `/usr/bin/sushi` and make sure it exists.
+
+If you want to install [Gloobus-Preview](https://launchpad.net/gloobus-preview), a QuickLook-like preview software. On Ubuntu you can do this by running the following commands in terminal:
 
 ```
 sudo add-apt-repository ppa:gloobus-dev/gloobus-preview
 sudo apt-get update
 sudo apt-get upgrade
 sudo apt-get install gloobus-preview
 ```
+After the installation is complete, check path `/usr/bin/gloobus-preview` and make sure it exists.
+
 
 For other distributions and versions the installation might be different.
 

TODO

@@ -0,0 +1,11 @@
+Bugs:
+- Missing special character escapes, file names with special sysmbos like $m^{2}$.pdf cant preview
+-
+
+Low-priority bugs:
+- Unable to preview with in 10 seconds of Zotero just starting
+- Sushi sometimes jump to Nautilus file preview window when Zotero select nothing and type to preview
+
+Ideas (to be validated):
+- 
+-

chrome/content/zoteroquicklook.pl

@@ -33,7 +33,13 @@
 	if (-e '/usr/bin/qlmanage') { exec('/usr/bin/qlmanage','-p',@files); }
 	elsif (-e '/usr/bin/sushi') {
 		# we pass an entire string, instead of a list of args, to `system` because dbus-send needs to run in an actual shell
-		$cmd = 'dbus-send --print-reply --dest=org.gnome.NautilusPreviewer /org/gnome/NautilusPreviewer org.gnome.NautilusPreviewer.ShowFile string:"file://%s" int32:0 boolean:false';
+		# kill last process to prevent the new preview window from losing window focus
+		# grep command checks include 'Previewer' processes that causes a new process with a name containing 'Preview' and 'grep' to be spawned
+		# so we need grep with option -v to avoid kill itself 
+		$awk_tmp = q{awk '{print $2}'};
+		$kill_pid = "while [ ` pgrep -c -f org.gnome.NautilusPreviewer` -ge 2 ] ; do  kill -15 ` ps aux | grep org.gnome.NautilusPreviewer | grep -v grep | $awk_tmp ` ; sleep 1.0e-2 ;done ;";
+		$dbus_preview = 'dbus-send --print-reply --dest=org.gnome.NautilusPreviewer /org/gnome/NautilusPreviewer org.gnome.NautilusPreviewer.ShowFile string:"file://%s" int32:0 boolean:false';
+		$cmd = join(" ", $kill_pid, $dbus_preview);
 		# sushi only support viewing single file
 		system sprintf($cmd,File::Spec->rel2abs($files[0]));
 	}

install.rdf

@@ -4,7 +4,7 @@
 		<em:id>[email protected]</em:id>
 		<em:type>2</em:type> <!-- type=extension -->
 		<em:name>ZoteroQuickLook</em:name>
-		<em:version>1.4.2</em:version>
+		<em:version>1.4.3</em:version>
 		<em:creator>Mikko Ronkko</em:creator>
 		<em:contributor>Brenton M. Wiernik</em:contributor>
 		<em:description>Quick Look Utility for Zotero.</em:description>
@@ -14,14 +14,14 @@
       <Description>
         <em:id>[email protected]</em:id>
         <em:minVersion>4.0</em:minVersion>
-        <em:maxVersion>5.*</em:maxVersion>
+        <em:maxVersion>6.*</em:maxVersion>
       </Description>
     </em:targetApplication>
     <em:targetApplication>
       <Description>
         <em:id>[email protected]</em:id>
         <em:minVersion>4.0</em:minVersion>
-        <em:maxVersion>5.*</em:maxVersion>
+        <em:maxVersion>6.*</em:maxVersion>
       </Description>
     </em:targetApplication>
   </Description>

linux_build.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+zip -r ./zoteroquicklook.xpi chrome defaults install.rdf chrome.manifest -x .*

update-altwindows.rdf

@@ -5,20 +5,20 @@
       <rdf:Seq>
         <rdf:li>
           <rdf:Description>
-            <em:version>1.4.2</em:version>
+            <em:version>1.4.3</em:version>
             <em:targetApplication>
               <rdf:Description>
                 <em:id>[email protected]</em:id>
                 <em:minVersion>4.0</em:minVersion>
-                <em:maxVersion>5.*</em:maxVersion>
+                <em:maxVersion>6.*</em:maxVersion>
                 <em:updateLink>https://github.com/mronkko/ZoteroQuickLook/releases/download/1.4.2/zoteroquicklook.zoteroplugin</em:updateLink>
               </rdf:Description>
             </em:targetApplication>
             <em:targetApplication>
               <rdf:Description>
                 <em:id>[email protected]</em:id>
                 <em:minVersion>4.0</em:minVersion>
-                <em:maxVersion>5.*</em:maxVersion>
+                <em:maxVersion>6.*</em:maxVersion>
                 <em:updateLink>https://github.com/mronkko/ZoteroQuickLook/releases/download/1.4.2/zoteroquicklook.zoteroplugin</em:updateLink>
               </rdf:Description>
             </em:targetApplication>

update.rdf

@@ -5,20 +5,20 @@
       <rdf:Seq>
         <rdf:li>
           <rdf:Description>
-            <em:version>1.4.2</em:version>
+            <em:version>1.4.3</em:version>
             <em:targetApplication>
               <rdf:Description>
                 <em:id>[email protected]</em:id>
                 <em:minVersion>4.0</em:minVersion>
-                <em:maxVersion>5.*</em:maxVersion>
+                <em:maxVersion>6.*</em:maxVersion>
                 <em:updateLink>https://github.com/mronkko/ZoteroQuickLook/releases/download/1.4.2/zoteroquicklook.zoteroplugin</em:updateLink>
               </rdf:Description>
             </em:targetApplication>
             <em:targetApplication>
               <rdf:Description>
                 <em:id>[email protected]</em:id>
                 <em:minVersion>4.0</em:minVersion>
-                <em:maxVersion>5.*</em:maxVersion>
+                <em:maxVersion>6.*</em:maxVersion>
                 <em:updateLink>https://github.com/mronkko/ZoteroQuickLook/releases/download/1.4.2/zoteroquicklook.zoteroplugin</em:updateLink>
               </rdf:Description>
             </em:targetApplication>