git.roojs.org Git - roobuilder/blob - src/Palete/CompletionProvider.vala

   1
   2 using Gtk;
   3
   4 // not sure why - but extending Gtk.SourceCompletionProvider seems to give an error..
   5 namespace Palete {
   6
   7     public class CompletionProvider : Object, SourceCompletionProvider
   8     {
   9                 Editor editor;
  10                 WindowState windowstate;
  11                 //public List<Gtk.SourceCompletionItem> filtered_proposals;
  12
  13                 public CompletionProvider(Editor editor)
  14                 {
  15                     this.editor  = editor;
  16                     this.windowstate = null; // not ready until the UI is built.
  17
  18                 }
  19
  20                 public string get_name ()
  21                 {
  22                   return  "roojsbuilder";
  23                 }
  24
  25                 public int get_priority ()
  26                 {
  27                   return 200;
  28                 }
  29
  30                 public bool match (SourceCompletionContext context)
  31                 {
  32                         bool has_matches = false;
  33                         this.fetchMatches(context, out has_matches);
  34                         return has_matches;
  35                 }
  36
  37                 public List<SourceCompletionItem>? fetchMatches(SourceCompletionContext context, out bool has_matches)
  38                 {
  39                      has_matches = false;
  40
  41                     if (this.windowstate == null) {
  42                             this.windowstate = this.editor.window.windowstate;
  43                     }
  44
  45
  46                     var buffer = context.completion.view.buffer;
  47                     var  mark = buffer.get_insert ();
  48                     TextIter end;
  49
  50                     buffer.get_iter_at_mark (out end, mark);
  51                     var endpos = end;
  52
  53                     var searchpos = endpos;
  54
  55                     searchpos.backward_find_char(is_space, null);
  56                     searchpos.forward_char();
  57                     var search = endpos.get_text(searchpos);
  58                     print("got search %s\n", search);
  59
  60                     if (search.length < 2) {
  61                             return null;
  62                     }
  63
  64                     // now do our magic..
  65                     var filtered_proposals = this.windowstate.file.palete().suggestComplete(
  66                             this.windowstate.file,
  67                             this.editor.node,
  68                             this.editor.prop,
  69                             search
  70                     );
  71
  72                     print("GOT %d results\n", (int) filtered_proposals.length());
  73
  74                     if (filtered_proposals.length() < 2) {
  75                         return null;
  76                     }
  77
  78                     filtered_proposals.sort((a, b) => {
  79                             return ((string)(a.text)).collate((string)(b.text));
  80                     });
  81                     has_matches = true;
  82                     return filtered_proposals;
  83
  84                 }
  85
  86                 public void populate (SourceCompletionContext context)
  87                 {
  88                         bool has_matches = false;
  89                         var filtered_proposals = this.fetchMatches(context, out has_matches);
  90                         if (!has_matches) {
  91                             context.add_proposals (this, null, true);
  92                             return;
  93                         }
  94                         // add proposals triggers a critical error in Gtk - try running gtksourceview/tests/test-completion.
  95                         // see https://bugzilla.gnome.org/show_bug.cgi?id=758646
  96                         var fe = GLib.Log.set_always_fatal(0);
  97                         context.add_proposals (this, filtered_proposals, true);
  98                         GLib.Log.set_always_fatal(fe);
  99                 }
 100
 101
 102
 103                 public bool activate_proposal (SourceCompletionProposal proposal, TextIter iter)
 104                 {
 105                         var istart = iter;
 106                         istart.backward_find_char(is_space, null);
 107                         istart.forward_char();
 108
 109                 //    var search = iter.get_text(istart);
 110
 111                         var buffer = iter.get_buffer();
 112                         buffer.delete(ref istart, ref iter);
 113                         buffer.insert(ref istart, proposal.get_text(), -1);
 114
 115                         return true;
 116                 }
 117
 118                 public SourceCompletionActivation get_activation ()
 119                 {
 120                         //if(SettingsManager.Get_Setting("complete_auto") == "true"){
 121                                 return SourceCompletionActivation.INTERACTIVE | SourceCompletionActivation.USER_REQUESTED;
 122                         //} else {
 123                         //      return Gtk.SourceCompletionActivation.USER_REQUESTED;
 124                         //}
 125                 }
 126
 127                 public int get_interactive_delay ()
 128                 {
 129                         return -1;
 130                 }
 131 /*
 132                 public bool get_start_iter (SourceCompletionContext context, SourceCompletionProposal proposal, out TextIter iter)
 133                 {
 134                         iter = new TextIter();
 135                         return false;
 136                 }
 137 */
 138                 public void update_info (SourceCompletionProposal proposal, SourceCompletionInfo info)
 139                 {
 140
 141                 }
 142
 143                 private bool is_space(unichar space){
 144                         return space.isspace() || space.to_string() == "";
 145                 }
 146
 147
 148         }
 149
 150
 151 }
 152