From 651b107b182a321030b14f4d3d5c50d340985571 Mon Sep 17 00:00:00 2001
From: Damien Elmes <git@ichi2.net>
Date: Sat, 20 Jan 2018 15:26:11 +1000
Subject: [PATCH] make preview delay customizable

---
 anki/decks.py         |  3 +++
 anki/schedv2.py       | 10 +++++-----
 aqt/dyndeckconf.py    | 13 +++++++++++--
 designer/dyndconf.ui  | 30 +++++++++++++++++++++++++++---
 tests/test_schedv2.py |  2 +-
 5 files changed, 47 insertions(+), 11 deletions(-)

diff --git a/anki/decks.py b/anki/decks.py
index eec95f713..8ef878b9c 100644
--- a/anki/decks.py
+++ b/anki/decks.py
@@ -42,6 +42,9 @@ defaultDynamicDeck = {
     'terms': [["", 100, 0]],
     'resched': True,
     'return': True, # currently unused
+
+    # v2 scheduler
+    "previewDelay": 10,
 }
 
 defaultConf = {
diff --git a/anki/schedv2.py b/anki/schedv2.py
index e5ae9ffbc..8325ad22a 100644
--- a/anki/schedv2.py
+++ b/anki/schedv2.py
@@ -94,16 +94,13 @@ class Scheduler:
             # update daily limit
             self._updateStats(card, 'rev')
 
-    # hard-coded for now
-    _previewDelay = 600
-
     def _answerCardPreview(self, card, ease):
         assert 1 <= ease <= 2
 
         if ease == 1:
             # repeat after delay
             card.queue = 4
-            card.due = intTime() + self._previewDelay
+            card.due = intTime() + self._previewDelay(card)
             self.lrnCount += 1
         else:
             # restore original card state and remove from filtered deck
@@ -1193,6 +1190,9 @@ where id = ?
         conf = self._cardConf(card)
         return conf['dyn'] and not conf['resched']
 
+    def _previewDelay(self, card):
+        return self._cardConf(card).get("previewDelay", 10)*60
+
     # Daily cutoff
     ##########################################################################
 
@@ -1317,7 +1317,7 @@ To study outside of the normal schedule, click the Custom Study button below."""
         # preview mode?
         if self._previewingCard(card):
             if ease == 1:
-                return self._previewDelay
+                return self._previewDelay(card)
             return 0
 
         # (re)learning?
diff --git a/aqt/dyndeckconf.py b/aqt/dyndeckconf.py
index 6c916f62e..0282de879 100644
--- a/aqt/dyndeckconf.py
+++ b/aqt/dyndeckconf.py
@@ -25,7 +25,7 @@ class DeckConf(QDialog):
         self.form.buttonBox.helpRequested.connect(lambda: openHelp("filtered"))
         self.setWindowTitle(_("Options for %s") % self.deck['name'])
         restoreGeom(self, "dyndeckconf")
-        self.setupOrder()
+        self.initialSetup()
         self.loadConf()
         if search:
             self.form.search.setText(search + " is:due")
@@ -39,21 +39,29 @@ class DeckConf(QDialog):
         self.exec_()
         saveGeom(self, "dyndeckconf")
 
-    def setupOrder(self):
+    def initialSetup(self):
         import anki.consts as cs
         self.form.order.addItems(list(cs.dynOrderLabels().values()))
         self.form.order_2.addItems(list(cs.dynOrderLabels().values()))
 
+        self.form.resched.stateChanged.connect(self._onReschedToggled)
+
+    def _onReschedToggled(self, _state):
+        self.form.previewDelayWidget.setVisible(not self.form.resched.isChecked()
+                                                and self.mw.col.schedVer() > 1)
+
     def loadConf(self):
         f = self.form
         d = self.deck
 
         f.resched.setChecked(d['resched'])
+        self._onReschedToggled(0)
 
         search, limit, order = d['terms'][0]
         f.search.setText(search)
         f.order.setCurrentIndex(order)
         f.limit.setValue(limit)
+        f.previewDelay.setValue(d.get("previewDelay", 10))
 
         if len(d['terms']) > 1:
             search, limit, order = d['terms'][1]
@@ -86,6 +94,7 @@ class DeckConf(QDialog):
                 f.order_2.currentIndex()])
 
         d['terms'] = terms
+        d['previewDelay'] = f.previewDelay.value()
 
         self.mw.col.decks.save(d)
         return True
diff --git a/designer/dyndconf.ui b/designer/dyndconf.ui
index 3bedbdc09..74ef67734 100644
--- a/designer/dyndconf.ui
+++ b/designer/dyndconf.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>445</width>
-    <height>354</height>
+    <width>382</width>
+    <height>413</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -134,13 +134,36 @@
         </property>
        </widget>
       </item>
-      <item row="1" column="0">
+      <item row="2" column="0">
        <widget class="QCheckBox" name="secondFilter">
         <property name="text">
          <string>Enable second filter</string>
         </property>
        </widget>
       </item>
+      <item row="1" column="0">
+       <widget class="QWidget" name="previewDelayWidget" native="true">
+        <layout class="QHBoxLayout" name="previewDelayBox">
+         <item>
+          <widget class="QLabel" name="label_7">
+           <property name="text">
+            <string>Repeat failed cards after</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QSpinBox" name="previewDelay"/>
+         </item>
+         <item>
+          <widget class="QLabel" name="label_8">
+           <property name="text">
+            <string>minutes</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>
@@ -177,6 +200,7 @@
   <tabstop>limit_2</tabstop>
   <tabstop>order_2</tabstop>
   <tabstop>resched</tabstop>
+  <tabstop>previewDelay</tabstop>
   <tabstop>secondFilter</tabstop>
   <tabstop>buttonBox</tabstop>
  </tabstops>
diff --git a/tests/test_schedv2.py b/tests/test_schedv2.py
index 8f20341cb..756126d2a 100644
--- a/tests/test_schedv2.py
+++ b/tests/test_schedv2.py
@@ -724,7 +724,7 @@ def test_preview():
     # grab the first card
     c = d.sched.getCard()
     assert d.sched.answerButtons(c) == 2
-    assert d.sched.nextIvl(c, 1) == d.sched._previewDelay
+    assert d.sched.nextIvl(c, 1) == 600
     assert d.sched.nextIvl(c, 2) == 0
     # failing it will push its due time back
     due = c.due