From 64d96040e6518640bec8c0d4b7b10bb26ab66ba2 Mon Sep 17 00:00:00 2001
From: frangoud <ffrangoudes@gmail.com>
Date: Tue, 2 Mar 2021 22:28:23 +0200
Subject: [PATCH] Initial commit

---
 .gitattributes                                |   2 +
 .gitignore                                    |   2 +
 LICENSE                                       |   4 +-
 README.md                                     |  21 +-
 build.sh                                      |   5 +
 chrome.manifest                               |   5 +
 chrome/content/options.xul                    |  52 +++
 chrome/content/overlay.xul                    |  66 ++++
 chrome/content/scripts/getPref.js             |   0
 .../content/scripts/zoteroduplicatesmerger.js | 318 ++++++++++++++++++
 .../locale/en-US/duplicatesmerger.properties  |  14 +
 chrome/locale/en-US/options.dtd               |  15 +
 chrome/locale/en-US/options.properties        |   0
 chrome/locale/en-US/overlay.dtd               |  17 +
 defaults/preferences/prefs.js                 |   3 +
 install.rdf                                   |  34 ++
 update.rdf                                    |  21 ++
 17 files changed, 575 insertions(+), 4 deletions(-)
 create mode 100644 .gitattributes
 create mode 100644 .gitignore
 create mode 100644 build.sh
 create mode 100644 chrome.manifest
 create mode 100644 chrome/content/options.xul
 create mode 100644 chrome/content/overlay.xul
 create mode 100644 chrome/content/scripts/getPref.js
 create mode 100644 chrome/content/scripts/zoteroduplicatesmerger.js
 create mode 100644 chrome/locale/en-US/duplicatesmerger.properties
 create mode 100644 chrome/locale/en-US/options.dtd
 create mode 100644 chrome/locale/en-US/options.properties
 create mode 100644 chrome/locale/en-US/overlay.dtd
 create mode 100644 defaults/preferences/prefs.js
 create mode 100644 install.rdf
 create mode 100644 update.rdf

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..eba1110
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4ffe5a6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.project
+*.xpi
diff --git a/LICENSE b/LICENSE
index a612ad9..f4bbcd2 100644
--- a/LICENSE
+++ b/LICENSE
@@ -35,7 +35,7 @@ Mozilla Public License Version 2.0
     means any form of the work other than Source Code Form.
 
 1.7. "Larger Work"
-    means a work that combines Covered Software with other material, in
+    means a work that combines Covered Software with other material, in 
     a separate file or files, that is not Covered Software.
 
 1.8. "License"
@@ -370,4 +370,4 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
 ---------------------------------------------------------
 
   This Source Code Form is "Incompatible With Secondary Licenses", as
-  defined by the Mozilla Public License, v. 2.0.
+  defined by the Mozilla Public License, v. 2.0.
\ No newline at end of file
diff --git a/README.md b/README.md
index e6c0601..97b56fd 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,19 @@
-# ZoteroDuplicatesMerger
-A zotero plugin to automatically merge duplicate items
+# Zotero Duplicates Merger
+
+This is an add-on for Zotero that automatically merges duplicated items, without having to manually go through the list.
+
+Please report any bugs, questions, or feature requests on the Zotero forums.
+
+Code for this extension is based in part [Zotero DOI Manager](https://github.com/bwiernik/zotero-shortdoi) by Brenton M. Wiernik.
+
+### Plugin Functions
+
+  - Merge duplicate items automatically
+    o Select which of the duplicate copies will be the master one
+    o Select how to handle type conflicts 
+
+### License
+
+Copyright (C) 2021 Fotos Frangoudes
+
+Distributed under the Mozilla Public License (MPL) Version 2.0.
diff --git a/build.sh b/build.sh
new file mode 100644
index 0000000..1a4f9af
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+echo Enter version number:
+read version
+rm zotero-duplicatesmerger-${version}.xpi
+zip -r zotero-duplicatesmerger-${version}.xpi chrome/* defaults/* chrome.manifest install.rdf options.xul
diff --git a/chrome.manifest b/chrome.manifest
new file mode 100644
index 0000000..b8d203c
--- /dev/null
+++ b/chrome.manifest
@@ -0,0 +1,5 @@
+content zoteroduplicatesmerger              chrome/content/
+locale  zoteroduplicatesmerger      en-US   chrome/locale/en-US/
+skin    zoteroduplicatesmerger      default chrome/skin/default/zoteroduplicatesmerger/
+
+overlay chrome://zotero/content/zoteroPane.xul chrome://zoteroduplicatesmerger/content/overlay.xul
\ No newline at end of file
diff --git a/chrome/content/options.xul b/chrome/content/options.xul
new file mode 100644
index 0000000..c7cda5f
--- /dev/null
+++ b/chrome/content/options.xul
@@ -0,0 +1,52 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+<?xml-stylesheet href="chrome://zotero-platform/content/preferences.css"?>
+
+<!DOCTYPE window SYSTEM "chrome://zoteroduplicatesmerger/locale/options.dtd">
+
+<!-- onload="updatePreferenceWindow('all');" -->
+<prefwindow id="duplicatesmerger-pref" title="&duplicatesmerger-preferences;" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+	<stringbundleset id="stringbundleset">
+		<stringbundle id="duplicatesmerger-options" src="chrome://zotero-duplicatesmerger/locale/options.properties"/>
+	</stringbundleset>
+  <prefpane label="&duplicatesmerger-preferences;" id="duplicatesmerger-prefpane">
+    <preferences>
+      <preference id="pref-duplicatesmerger-master" name="extensions.duplicatesmerger.master" type="string"/>
+      <preference id="pref-duplicatesmerger-typemismatch" name="extensions.duplicatesmerger.typemismatch" type="string"/>
+      <preference id="pref-duplicatesmerger-delay" name="extensions.duplicatesmerger.delay" type="int"/>
+    </preferences>
+
+    <groupbox>
+      <caption label="&duplicatesmerger-menu-master-label;"/>
+      <radiogroup id="id-duplicatesmerger-master" preference="pref-duplicatesmerger-master">
+        <radio label="&duplicatesmerger-master-oldest-label;" value='oldest'/>
+        <radio label="&duplicatesmerger-master-newest-label;" value='newest'/>
+      </radiogroup>
+    </groupbox>
+    <separator class="thin"/>
+      
+    <groupbox>
+      <caption label="&duplicatesmerger-menu-typemismatch-label;"/>
+      <radiogroup id="id-duplicatesmerger-typemismatch" preference="pref-duplicatesmerger-typemismatch">
+        <radio label="&duplicatesmerger-typemismatch-skip-label;" value='skip'/>
+        <radio label="&duplicatesmerger-typemismatch-master-label;" value='master'/>
+      </radiogroup>
+    </groupbox>
+
+    <separator class="thin"/>
+    <hbox style="margin: 0">
+      <label value="&duplicatesmerger-preferences-delay;"/>
+      <textbox id="id-duplicatesmerger-delay" preference="pref-duplicatesmerger-delay" width="50"/>
+    </hbox>
+    
+    <hbox style="margin: 0">
+      <label style="margin-right:0px" value="&for-more-information;"/>
+      <label style="margin-left:0px; margin-right:0px" class="text-link" onclick="Zotero.DuplicatesMerger.loadURI('https://github.com/frangoud/ZoteroDuplicatesMerger');" value="&duplicatesMerger-website;"/>
+      <label style="margin-left:0px; margin-right:0px" value="."/>
+    </hbox>
+  </prefpane>
+
+  <script src="options.js"/>
+  <script src="chrome://zotero/content/include.js"/>
+
+</prefwindow>
\ No newline at end of file
diff --git a/chrome/content/overlay.xul b/chrome/content/overlay.xul
new file mode 100644
index 0000000..cfc10c2
--- /dev/null
+++ b/chrome/content/overlay.xul
@@ -0,0 +1,66 @@
+<?xml version="1.0"?>
+
+<!DOCTYPE overlay SYSTEM "chrome://zoteroduplicatesmerger/locale/overlay.dtd">
+
+<overlay
+    id="zoteroduplicatesmerger"
+    xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+    <script src="chrome://zoteroduplicatesmerger/content/scripts/zoteroduplicatesmerger.js"/>
+    <script src="chrome://zotero/content/include.js"/>
+
+    <stringbundleset id="stringbundleset">
+        <stringbundle
+            id="duplicatesmerger-bundle"
+            src="chrome://zoteroduplicatesmerger/locale/duplicatesmerger.properties"/>
+    </stringbundleset>
+
+    <!-- Items popup menu -->
+    <popup
+        id="zotero-itemmenu">
+        <menuitem
+            id="duplicatesmerger-itemmenu"
+            label="&duplicatesmerger-itemmenu-label;"
+            oncommand="Zotero.DuplicatesMerger.mergeDuplicates()"/>
+    </popup>
+    
+    <!-- Tools menu on the toolbar -->
+    <menupopup id="menu_ToolsPopup">
+        <menu id="menu_Tools-duplicatesmerger-menu" label="&duplicatesmerger-menu-root-label;">
+            <menupopup id="menu_Tools-duplicatesmerger-menu-popup">
+            <!-- Open preferences window -->
+            <menuitem id="menu_Tools-duplicatesmerger-preferences" label="&duplicatesmerger-preferences-label;" oncommand="Zotero.DuplicatesMerger.openPreferenceWindow();"/>
+            <!-- Handle master item selection -->
+            <menu id="menu_Tools-duplicatesmerger-menu-master" label="&duplicatesmerger-menu-master-label;">
+                <menupopup id="menu_Tools-duplicatesmerger-menu-popup-master" onpopupshowing="Zotero.DuplicatesMerger.setCheck('master');">
+                <menuitem
+                    id="menu_Tools-duplicatesmerger-menu-popup-master-oldest"
+                    type="checkbox"
+                    label="&duplicatesmerger-master-oldest-label;"
+                    oncommand="Zotero.DuplicatesMerger.changePref('master','oldest');"/>
+                <menuitem
+                    id="menu_Tools-duplicatesmerger-menu-popup-master-newest"
+                    type="checkbox"
+                    label="&duplicatesmerger-master-newest-label;"
+                    oncommand="Zotero.DuplicatesMerger.changePref('master','newest');"/>
+                </menupopup>
+            </menu>
+            <!-- Handle type mismatch errors -->
+            <menu id="menu_Tools-duplicatesmerger-menu-typemismatch" label="&duplicatesmerger-menu-typemismatch-label;">
+                <menupopup id="menu_Tools-duplicatesmerger-menu-popup-typemismatch" onpopupshowing="Zotero.DuplicatesMerger.setCheck('typemismatch');">
+                <menuitem
+                    id="menu_Tools-duplicatesmerger-menu-popup-typemismatch-skip"
+                    type="checkbox"
+                    label="&duplicatesmerger-typemismatch-skip-label;"
+                    oncommand="Zotero.DuplicatesMerger.changePref('typemismatch','skip');"/>
+                <menuitem
+                    id="menu_Tools-duplicatesmerger-menu-popup-typemismatch-master"
+                    type="checkbox"
+                    label="&duplicatesmerger-typemismatch-master-label;"
+                    oncommand="Zotero.DuplicatesMerger.changePref('typemismatch','master');"/>
+                </menupopup>
+            </menu>
+            </menupopup>
+        </menu>
+    </menupopup>
+</overlay>
diff --git a/chrome/content/scripts/getPref.js b/chrome/content/scripts/getPref.js
new file mode 100644
index 0000000..e69de29
diff --git a/chrome/content/scripts/zoteroduplicatesmerger.js b/chrome/content/scripts/zoteroduplicatesmerger.js
new file mode 100644
index 0000000..b14402f
--- /dev/null
+++ b/chrome/content/scripts/zoteroduplicatesmerger.js
@@ -0,0 +1,318 @@
+// Startup -- load Zotero and constants
+if (typeof Zotero === 'undefined') {
+    Zotero = {};
+}
+Zotero.DuplicatesMerger = {};
+
+// Preference managers
+
+function getPref(pref) {
+    return Zotero.Prefs.get('extensions.duplicatesmerger.' + pref, true);
+}
+
+function setPref(pref, value) {
+    return Zotero.Prefs.set('extensions.duplicatesmerger.' + pref, value, true);
+}
+
+// Startup - initialize plugin
+Zotero.DuplicatesMerger.loadURI = function(uri){
+    ZoteroPane_Local.loadURI(uri);
+};
+
+Zotero.DuplicatesMerger.init = function() {
+    this.nextPossibleDuplicateItem = 0;
+    this.isRunning = false;
+    this.counter = 0;
+    this.totalItems = 1;
+
+    //this.stringsBundle = document.getElementById('duplicatesmerger-bundle');
+    this.stringsBundle = Components.classes['@mozilla.org/intl/stringbundle;1']
+    .getService(Components.interfaces.nsIStringBundleService)
+    .createBundle('chrome://zoteroduplicatesmerger/locale/duplicatesmerger.properties');
+/*
+    // Register the callback in Zotero as an item observer
+    var notifierID = Zotero.Notifier.registerObserver(
+        Zotero.DuplicatesMerger.notifierCallback, ['item']);
+
+    // Unregister callback when the window closes (important to avoid a memory leak)
+    window.addEventListener('unload', function(e) {
+        Zotero.Notifier.unregisterObserver(notifierID);
+    }, false);
+*/
+};
+
+Zotero.DuplicatesMerger.getFormattedString = function(stringName, params) {
+    try {
+        if (params !== undefined){
+            if (typeof params != 'object'){
+                params = [params];
+            }
+            return this.stringsBundle.formatStringFromName(stringName, params, params.length);
+        }
+        else {
+            return this.stringsBundle.GetStringFromName(stringName);
+        }
+    }
+    catch (e){
+        throw ('Localized string not available for ' + stringName);
+    }       
+};
+
+// Controls for Tools menu
+
+// *********** Set the checkbox checks, frompref
+Zotero.DuplicatesMerger.setCheck = function(type) {
+    var pref = getPref(type);
+    if (type == 'master'){
+        var tools_oldest = document.getElementById("menu_Tools-duplicatesmerger-menu-popup-master-oldest");
+        var tools_newest = document.getElementById("menu_Tools-duplicatesmerger-menu-popup-master-newest");
+        tools_oldest.setAttribute("checked", Boolean(pref === "oldest"));
+        tools_newest.setAttribute("checked", Boolean(pref === "newest"));
+    }
+    else if (type == 'typemismatch'){
+        var tools_skip = document.getElementById("menu_Tools-duplicatesmerger-menu-popup-typemismatch-skip");
+        var tools_master  = document.getElementById("menu_Tools-duplicatesmerger-menu-popup-typemismatch-master");
+        tools_skip.setAttribute("checked", Boolean(pref === "skip"));
+        tools_master.setAttribute("checked", Boolean(pref === "master"));
+    }
+};
+
+// *********** Change the checkbox, topref
+Zotero.DuplicatesMerger.changePref = function changePref(pref, option) {
+    setPref(pref, option);
+};
+
+/**
+ * Open preference window
+ */
+Zotero.DuplicatesMerger.openPreferenceWindow = function(paneID, action) {
+    var io = {pane: paneID, action: action};
+    window.openDialog('chrome://zoteroduplicatesmerger/content/options.xul',
+        'duplicatesmerger-pref',
+        'chrome,titlebar,toolbar,centerscreen' + Zotero.Prefs.get('browser.preferences.instantApply', true) ? 'dialog=no' : 'modal', io
+    );
+};
+
+Zotero.DuplicatesMerger.mergeSelectedItems = async function(DupPane, items){
+    // try {
+        DupPane.mergeSelectedItems();
+        
+        var masterSelectionPreference = getPref("master");
+
+        items.sort(function (a, b) {
+            return a.dateAdded > b.dateAdded ? 1 : a.dateAdded == b.dateAdded ? 0 : -1;
+        });
+        
+        var masterIndex = 0;
+        if (masterSelectionPreference == "newest"){
+            masterIndex = items.length - 1;
+        }
+        if (masterIndex > 0){
+            setTimeout(function () {
+                var dateList = document.getElementById('zotero-duplicates-merge-original-date');
+                dateList.selectedIndex = masterIndex;
+            }, 0);
+            Zotero_Duplicates_Pane.setMaster(masterIndex);  
+        }
+
+        var masterTypeId = items[masterIndex].itemTypeID;
+        var isTypeMismatch = false;
+        for (let item of items) {
+            if (masterTypeId != item.itemTypeID){
+                isTypeMismatch = true;
+                break;
+            }
+        }
+
+        if (isTypeMismatch == true){
+            var typemismatchPreference = getPref("typemismatch");
+            if (typemismatchPreference == "skip"){
+                Zotero.DuplicatesMerger.nextPossibleDuplicateItem += items.length;
+                return false;
+            }
+            else if (typemismatchPreference == "master"){
+                for (let item of items) {
+                    if (masterTypeId != item.itemTypeID){
+                        item.setField("itemTypeID",masterTypeId);
+                        await item.saveTx();
+                    }
+                }
+            }
+        }
+
+        //Merge
+        //Zotero.DuplicatesMerger.nextPossibleDuplicateItem += items.length;
+        Zotero_Duplicates_Pane.merge();
+        return true;
+    // } catch (e){
+    //     throw new Error(`Failed merging items with error: ${e}`);
+    // }
+};
+
+/**
+ * Selects the next available set of duplicated items
+ *
+ * @param {ZoteroPane} pane
+ * @return {Integer}  count of selected items
+ * @return {Interger[]}
+ */
+Zotero.DuplicatesMerger.selectNextDuplicatedItems = function (pane){
+    if (pane.itemsView.rowCount > 0){
+        var itemID = pane.itemsView.getRow(Zotero.DuplicatesMerger.nextPossibleDuplicateItem).ref.id;
+        var setItemIDs = pane.getCollectionTreeRow().ref.getSetItemsByItemID(itemID);
+        if (setItemIDs.length <= 1)
+            return {
+                count: 0,
+                items: []
+            };
+        pane.itemsView.selectItems(setItemIDs);
+
+        return{
+            count: setItemIDs.length,
+            items: pane.itemsView.getSelectedItems()
+        };
+    }
+    return {
+        count: 0,
+        items: []
+    };
+};
+
+/**
+ * Initializes a new progress window
+ *
+ */
+Zotero.DuplicatesMerger.createProgressWindow = function(){
+    // If there is already a window close it
+    if (this.progressWindow) {
+        this.progressWindow.close();
+    }
+
+    // Create a new window and initialize it
+    var iconHeadline = 'chrome://zotero/skin/treesource-duplicates' + (Zotero.hiDPI ? "@2x" : "") + '.png';
+    var icon = "chrome://zotero/skin/tick.png";
+    this.progressWindow = new Zotero.ProgressWindow({closeOnClick:false});
+    this.progressWindow.changeHeadline(this.getFormattedString("general.progressHeaderInitial"), iconHeadline);
+    this.progressWindow.progress = new this.progressWindow.ItemProgress(icon);
+    this.progressWindow.progress.setProgress(100);
+    this.progressWindow.progress.setText(this.getFormattedString("general.progressMsgInitial", [this.totalItems]));
+    this.progressWindow.show();
+    
+    // Zotero.DuplicatesMerger.progressWindow.startCloseTimer(4000);
+    // Zotero.DuplicatesMerger.progressWindow = new Zotero.ProgressWindow({closeOnClick: false});
+    // Zotero.DuplicatesMerger.progressWindow.changeHeadline("Merging duplicates", icon);
+    // Zotero.DuplicatesMerger.progressWindow.progress = new Zotero.DuplicatesMerger.progressWindow.ItemProgress(icon, "Merging duplicates.");
+};
+
+/**
+ * Update the progress window based on the number of items processed
+ */
+Zotero.DuplicatesMerger.updateProgressWindow = function () {
+    var percent = Math.round((this.counter/this.totalItems)*100);
+    this.progressWindow.progress.setProgress(percent);
+    this.progressWindow.progress.setText(this.getFormattedString("general.itemsProcessed", [this.counter, this.totalItems]));
+    this.progressWindow.show();
+};
+
+Zotero.DuplicatesMerger.closeProgressWindow = function (errorNo, header, msg) {
+    var iconHeadline = 'chrome://zotero/skin/treesource-duplicates' + (Zotero.hiDPI ? "@2x" : "") + '.png';
+    if (errorNo == 0){
+        this.progressWindow.changeHeadline(header, iconHeadline);
+        this.progressWindow.progress.setProgress(100);
+        this.progressWindow.progress.setText(msg);
+        this.progressWindow.show();
+        this.progressWindow.startCloseTimer(2000);
+    }
+    else{
+        this.progressWindow.changeHeadline(header, iconHeadline);
+        this.progressWindow.addDescription(msg);
+        this.progressWindow.show();
+        this.progressWindow.startCloseTimer(5000);
+    }
+};
+/**
+ * Main plugin function: Merge duplicate items
+ */
+Zotero.DuplicatesMerger.mergeDuplicates = async function () {
+    // Prevent the merger to run again, if it's already running
+    if(this.isRunning == true)
+    {
+        return;
+    }
+    // Notify start of the duplicate merger
+    this.isRunning = true;    
+
+    // Initialize time out counter to pace the merging
+    var idleCount = 0;
+    var processedDelay = 0;
+
+    var delayBetweenCalls = getPref("delay");
+
+    // Keep reference of the duplicates pane
+    var DuplicatesPane = Zotero.getActiveZoteroPane();
+
+    // Intialize progress / acitve item counters
+    this.counter = 0;
+    this.totalItems = DuplicatesPane.itemsView.rowCount;
+    this.nextPossibleDuplicateItem = 0;
+
+    // Create Progress Windows
+    this.createProgressWindow();
+
+    // Retrive the first items from the list
+    var selectedItems = this.selectNextDuplicatedItems(DuplicatesPane);
+    // Go while the duplicates pane is still the selected pane,
+    // there are still items to be processed, and plugin hasn't timed out
+    while (DuplicatesPane.getCollectionTreeRow().isDuplicates() && DuplicatesPane.itemsView.rowCount > (Zotero.DuplicatesMerger.nextPossibleDuplicateItem+1) && idleCount < 10) {
+        // If there is a set of items selected
+        if (selectedItems.count > 1) {
+            try{
+                // Try to merge them        
+                this.counter += selectedItems.count;                
+                this.mergeSelectedItems(DuplicatesPane, selectedItems.items);
+                
+                // Wait for a bit and then select the next set of items
+                await new Promise(r => setTimeout(r, delayBetweenCalls));
+                this.updateProgressWindow();
+                selectedItems = this.selectNextDuplicatedItems(DuplicatesPane);
+
+            }catch(e){
+                // An error occured! Stop running and close notification window
+                this.isRunning = false;
+
+                this.closeProgressWindow(1, this.getFormattedString("general.errorHasOccurredHeader"),this.getFormattedString("general.errorHasOccurredMsg"));
+
+                throw new Error('Stopping execution of duplicates merging');
+            }
+            
+            // A set of items has been processed this cycle
+            // => reset idle counters
+            idleCount = 0;
+            processedDelay = 0;
+        }
+        else {
+            if (processedDelay > 1){
+                idleCount = idleCount + 1;
+                selectedItems = this.selectNextDuplicatedItems(DuplicatesPane);
+            }
+        }
+
+        await new Promise(r => setTimeout(r, delayBetweenCalls));
+        processedDelay += delayBetweenCalls;
+    }
+
+    await new Promise(r => setTimeout(r, 2 * delayBetweenCalls));
+    if (DuplicatesPane.itemsView.rowCount <= (this.nextPossibleDuplicateItem+1)){
+        this.closeProgressWindow(0, this.getFormattedString("general.progressCompleteHeader"),this.getFormattedString("general.progressCompleteMsg", [this.counter]));
+    }
+    else{
+        this.closeProgressWindow(0, this.getFormattedString("general.progressInterrupterHeader"),this.getFormattedString("general.progressInterrupterMsg", [this.counter]));
+    }
+    this.isRunning = false;
+};
+
+if (typeof window !== 'undefined') {
+    window.addEventListener('load', function(e) {
+        Zotero.DuplicatesMerger.init();
+    }, false);
+}
diff --git a/chrome/locale/en-US/duplicatesmerger.properties b/chrome/locale/en-US/duplicatesmerger.properties
new file mode 100644
index 0000000..10f53fc
--- /dev/null
+++ b/chrome/locale/en-US/duplicatesmerger.properties
@@ -0,0 +1,14 @@
+general.itemsProcessed	    = Items processed: %s out of %s
+
+general.progressHeader          = Duplicated Merger
+general.progressHeaderInitial   = Merging Duplicates
+general.progressMsgInitial   = Total items to process: %s
+
+general.progressCompletedHeader = Duplicated Merger Completed
+general.progressCompleteMsg =  Operation complete succesfully\n%s items were processed.
+
+general.progressInterrupterHeader  = Duplicated Merger Interrupted
+general.progressInterrupterMsg     = Operation was interrupted.\n%s items were processed.
+
+general.errorHasOccurredHeader  = Duplicated Merger error
+general.errorHasOccurredMsg     = An error has occured. Refresh the duplicated window and try again.
\ No newline at end of file
diff --git a/chrome/locale/en-US/options.dtd b/chrome/locale/en-US/options.dtd
new file mode 100644
index 0000000..67978ff
--- /dev/null
+++ b/chrome/locale/en-US/options.dtd
@@ -0,0 +1,15 @@
+<!ENTITY duplicatesmerger-name "Duplicates Merger">
+<!ENTITY duplicatesmerger-preferences "Duplicates Merger Preferences"> 
+<!ENTITY duplicatesmerger-menu-typemismatch-label "Type mismatch">
+<!ENTITY duplicatesmerger-typemismatch-skip-label "Skip">
+<!ENTITY duplicatesmerger-typemismatch-master-label "Change to masters' type">
+<!ENTITY duplicatesmerger-preferences-label "Preferences window">
+
+<!ENTITY duplicatesmerger-menu-master-label "Master selection">
+<!ENTITY duplicatesmerger-master-oldest-label "Oldest">
+<!ENTITY duplicatesmerger-master-newest-label "Newest">
+
+<!ENTITY duplicatesmerger-preferences-delay "Delay between updates">
+
+<!ENTITY for-more-information "For more information goto "> 
+<!ENTITY duplicatesMerger-website "Duplicates Merger website"> 
\ No newline at end of file
diff --git a/chrome/locale/en-US/options.properties b/chrome/locale/en-US/options.properties
new file mode 100644
index 0000000..e69de29
diff --git a/chrome/locale/en-US/overlay.dtd b/chrome/locale/en-US/overlay.dtd
new file mode 100644
index 0000000..6202d1b
--- /dev/null
+++ b/chrome/locale/en-US/overlay.dtd
@@ -0,0 +1,17 @@
+<!ENTITY zotero.zoteroduplicatesmerger.menu.label "Duplicates merger preferences">
+<!ENTITY zotero.zoteroduplicatesmerger.toolsmenu.label "Merge duplicates">
+
+<!-- Item popup menu -->
+<!ENTITY duplicatesmerger-itemmenu-label "Merge duplicates">
+
+<!-- Menu options -->
+<!ENTITY duplicatesmerger-menu-root-label "Duplicates merger">
+
+<!ENTITY duplicatesmerger-menu-typemismatch-label "Type mismatch">
+<!ENTITY duplicatesmerger-typemismatch-skip-label "Skip">
+<!ENTITY duplicatesmerger-typemismatch-master-label "Change to masters' type">
+<!ENTITY duplicatesmerger-preferences-label "Preferences window">
+
+<!ENTITY duplicatesmerger-menu-master-label "Master selection">
+<!ENTITY duplicatesmerger-master-oldest-label "Oldest">
+<!ENTITY duplicatesmerger-master-newest-label "Newest">
diff --git a/defaults/preferences/prefs.js b/defaults/preferences/prefs.js
new file mode 100644
index 0000000..6e1a352
--- /dev/null
+++ b/defaults/preferences/prefs.js
@@ -0,0 +1,3 @@
+ pref("extensions.duplicatesmerger.master", "oldest");
+ pref("extensions.duplicatesmerger.typemismatch", "skip");
+ pref("extensions.duplicatesmerger.delay", 500);
\ No newline at end of file
diff --git a/install.rdf b/install.rdf
new file mode 100644
index 0000000..a0403f7
--- /dev/null
+++ b/install.rdf
@@ -0,0 +1,34 @@
+<?xml version="1.0"?>
+<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+		xmlns:em="http://www.mozilla.org/2004/em-rdf#">
+	
+	<Description about="urn:mozilla:install-manifest">
+		<em:id>frangoudes.fotos@gmail.com</em:id>
+		<em:name>Duplicates Merger for Zotero</em:name>
+		<em:version>1.0.0</em:version>
+		<em:description>A plugin to merge duplicate items in Zotero</em:description>
+		<em:creator>Fotos Frangoudes</em:creator>
+		<em:updateURL>https://github.com/frangoud/ZoteroDuplicatesMerger</em:updateURL> <!-- https://www.zotero.org/download/plugins.rdf -->
+		<em:type>2</em:type> <!-- type=extension -->
+		
+		<!-- Requires Zotero -->
+		<em:requires>
+			<Description>
+				<em:id>zotero@chnm.gmu.edu</em:id>
+				<em:name>Zotero</em:name>
+				<em:homepageURL>http://www.zotero.org</em:homepageURL>
+				<em:minVersion>5.0</em:minVersion>
+				<em:maxVersion>*</em:maxVersion>
+			</Description>
+		</em:requires>
+    
+		<!-- Requires Firefox or Zotero Standalone -->		
+		<em:targetApplication>
+			<Description>
+				<em:id>zotero@chnm.gmu.edu</em:id>
+				<em:minVersion>5.0</em:minVersion>
+				<em:maxVersion>*</em:maxVersion>
+			</Description>
+		</em:targetApplication>
+	</Description>
+</RDF>
diff --git a/update.rdf b/update.rdf
new file mode 100644
index 0000000..50aa0e5
--- /dev/null
+++ b/update.rdf
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#">
+  <rdf:Description rdf:about="urn:mozilla:extension:frangoudes.fotos@gmail.com">
+    <em:updates>
+      <rdf:Seq>
+        <rdf:li>
+          <rdf:Description>
+            <em:version>1.0.0</em:version>
+            <em:targetApplication>
+              <rdf:Description>
+                <em:id>zotero@chnm.gmu.edu</em:id>
+                <em:minVersion>5.0</em:minVersion>
+                <em:updateLink>https://github.com/frangoud/ZoteroDuplicatesMerger</em:updateLink>
+              </rdf:Description>
+            </em:targetApplication>
+          </rdf:Description>
+        </rdf:li>
+      </rdf:Seq>
+    </em:updates>
+  </rdf:Description>
+</rdf:RDF>