GenericTableModel/View improvements (#1163)

* [dataviews] GenericTableModel/View improvements ...

* GenericTableView got a new argument specifying whether the ellipsis
for long cell content should be right (old behavior, default) or left
useful for long content such as the filenames in the video table.
* GenericTableView uses all the space that available to the table.
* The model's data function returns the full cell content to be shown as
tool tip text.

* [gui/app] set the ellipsis to be on the left for long table contents

---------

Co-authored-by: Liezl Maree <[email protected]>

sleap/gui/app.py

@@ -987,6 +987,7 @@ def _add_button(to, label, action, key=None):
             row_name="video",
             is_activatable=True,
             model=VideosTableModel(items=self.labels.videos, context=self.commands),
+            ellipsis_left=True,
         )
         videos_layout.addWidget(self.videosTable)
 

sleap/gui/dataviews.py

@@ -74,7 +74,6 @@ def __init__(
         super(GenericTableModel, self).__init__()
         self.properties = properties or self.properties or []
         self.context = context
-
         self.items = items
 
     def object_to_items(self, item_list):
@@ -142,6 +141,13 @@ def data(self, index: QtCore.QModelIndex, role=QtCore.Qt.DisplayRole):
         elif role == QtCore.Qt.ForegroundRole:
             return self.get_item_color(self.original_items[idx], key)
 
+        elif role == QtCore.Qt.ToolTipRole:
+            if isinstance(item, dict) and key in item:
+                return item[key]
+
+            if hasattr(item, key):
+                return getattr(item, key)
+
         return None
 
     def setData(self, index: QtCore.QModelIndex, value: str, role=QtCore.Qt.EditRole):
@@ -272,6 +278,11 @@ class GenericTableView(QtWidgets.QTableView):
     for some reason you need this to be different. For instance, the table
     of instances in the GUI sets this to "" so that the row for an instance
     is automatically selected when `state["instance"]` is set outside the table.
+
+    "ellipsis_left" can be used to make the TableView truncate cell content on
+    the left instead of the right side. By default, the argument is set to
+    False, i.e. truncation on the right side, which is also the default for
+    QTableView.
     """
 
     row_name: Optional[str] = None
@@ -287,6 +298,7 @@ def __init__(
         name_prefix: Optional[str] = None,
         is_sortable: bool = False,
         is_activatable: bool = False,
+        ellipsis_left: bool = False,
     ):
         super(GenericTableView, self).__init__()
 
@@ -298,6 +310,10 @@ def __init__(
 
         self.setModel(model)
 
+        if ellipsis_left:
+            self.setTextElideMode(QtCore.Qt.ElideLeft)
+            self.setWordWrap(False)
+        self.horizontalHeader().setStretchLastSection(True)
         self.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
         self.setSelectionMode(QtWidgets.QAbstractItemView.SingleSelection)
         self.setSortingEnabled(self.is_sortable)