Added support to move to the next unannotated document

CONTRIBUTORS.md

@@ -16,6 +16,7 @@ In order by changed lines of code ([Ballmer][ballmer] says [SLOC][sloc]
 * David McClosky            <david.mcclosky gmail com>
 * Antony Scerri             <a.scerri elsevier com>
 * Jon Crump                 <jjcrump uw edu>
+* Jose Gonzalez-Brenes      <jgonzalez chegg com>
 
 Extracted using the following bash one-liner:
 

client/src/visualizer_ui.js

@@ -1530,6 +1530,26 @@ var VisualizerUI = (function($, window, undefined) {
         }
       };
 
+      var refreshAndMove = function(response) {
+        dispatcher.post('setDocument', [selectorData.items[response.new_pos][2],
+                                        selectorData.items[response.new_pos][1]]);
+        return false;
+
+      }
+
+      var nextUnannotated = function(dir) {
+        var pos = currentSelectorPosition();
+        // Request the server to reload collection:
+        console.log(selectorData.items)
+        dispatcher.post('ajax',
+                        [{ action: 'get_next_unnanotated', collection: selectorData.collection, start: pos },
+                        'refreshAndMove',
+                         {collection: selectorData.collection, keep: true}]);
+
+
+        return false;
+      };
+
       var moveInFileBrowser = function(dir) {
         var pos = currentSelectorPosition();
         var newPos = pos + dir;
@@ -2264,6 +2284,10 @@ var VisualizerUI = (function($, window, undefined) {
         $('#type_collapse_limit')[0].value = Configuration.typeCollapseLimit;
       }
 
+      $('#fast_forward').button().click(function() {
+        return nextUnannotated();
+      });
+
       $('#prev').button().click(function() {
         return moveInFileBrowser(-1);
       });
@@ -2307,6 +2331,7 @@ var VisualizerUI = (function($, window, undefined) {
           on('initForm', initForm).
           on('collectionLoaded', rememberNormDb).
           on('collectionLoaded', collectionLoaded).
+          on('refreshAndMove', refreshAndMove).
           on('spanAndAttributeTypesLoaded', spanAndAttributeTypesLoaded).
           on('isReloadOkay', isReloadOkay).
           on('current', gotCurrent).

index.xhtml

@@ -111,7 +111,9 @@
       <div id="mainHeader" class="ui-widget-header">
         <div id="mainlogo" class="logo unselectable">brat</div>
         <span id="navbuttons">
-          <img id="prev" alt="Previous document (Cursor Left)" title="Previous document (Cursor Left)" src="static/img/arrow-180.png"/><img id="next" alt="Next document (Cursor Right)" title="Next document (Cursor Right)" src="static/img/arrow.png"/>
+          <img id="prev" alt="Previous document (Cursor Left)" title="Previous document (Cursor Left)" src="static/img/arrow-180.png"/>
+          <img id="next" alt="Next document (Cursor Right)" title="Next document (Cursor Right)" src="static/img/arrow.png"/>
+          <img id="fast_forward" alt="Next document without annotation" title="Next unannotated document" src="static/img/fast_forward.png"/>
         </span>
         <div id="document_name">
           <input readonly="readonly" class="ui-widget-header"/>

server/src/dispatch.py

@@ -20,7 +20,7 @@
 from config import DATA_DIR
 from convert.convert import convert
 from docimport import save_import
-from document import (get_directory_information, get_document,
+from document import (get_directory_information,get_next_unnanotated, get_document,
         get_document_timestamp, get_configuration)
 from download import download_file, download_collection
 from inspect import getargspec
@@ -47,6 +47,7 @@ def logging_no_op(collection, document, log):
 # Function call-backs
 DISPATCHER = {
         'getCollectionInformation': get_directory_information,
+        'get_next_unnanotated': get_next_unnanotated,
         'getDocument': get_document,
         'getDocumentTimestamp': get_document_timestamp,
         'importDocument': save_import,

server/src/document.py

@@ -505,6 +505,32 @@ def _inject_annotation_type_conf(dir_path, json_dic=None):
 
     return json_dic
 
+def get_next_unnanotated(collection, start):
+    directory = collection
+    start = int(start)
+    new_pos = start
+    real_dir = real_directory(directory)
+
+    assert_allowed_to_read(real_dir)
+
+    # Get the document names
+    base_names = [fn[0:-4] for fn in _listdir(real_dir)
+                  if fn.endswith('txt')]
+
+    try:
+        stats_types, doc_stats = get_statistics(real_dir, base_names)
+    except OSError:
+        # something like missing access permissions?
+        raise CollectionNotAccessibleError
+
+    if start < len(doc_stats):
+        for i in range(start, len(doc_stats)):  # Have to account for "." , ".."
+            if sum(doc_stats[i]) == 0:
+                new_pos = i + 1
+                break
+    return {"new_pos": new_pos}
+
+
 # TODO: This is not the prettiest of functions
 def get_directory_information(collection):
     directory = collection