From b520b12d7a6968344354bfaa071bb92e42f00705 Mon Sep 17 00:00:00 2001
From: Olivier Keshavjee <olivier.keshavjee@gmail.com>
Date: Mon, 6 Nov 2017 10:05:20 +0100
Subject: [PATCH] Adds a tip if pandoc is not installed. #190

---
 manuskript/exporter/basic.py           |  4 +++-
 manuskript/exporter/pandoc/__init__.py |  2 ++
 manuskript/functions.py                |  6 ++++++
 manuskript/mainWindow.py               |  3 +--
 manuskript/ui/exporters/exporter.py    | 18 ++++++++++++++----
 5 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/manuskript/exporter/basic.py b/manuskript/exporter/basic.py
index 5acbe9e..0cf6100 100644
--- a/manuskript/exporter/basic.py
+++ b/manuskript/exporter/basic.py
@@ -19,6 +19,8 @@ class basicExporter:
     cmd = ""
     customPath = ""
     icon = ""
+    absentTip = ""  # A tip displayed when exporter is absent.
+    absentURL = ""  # URL to open if exporter is absent.
 
     def __init__(self):
         settings = QSettings()
@@ -129,7 +131,7 @@ class basicFormat:
     @classmethod
     def isValid(cls):
         return True
-    
+
     @classmethod
     def projectPath(cls):
         return os.path.dirname(os.path.abspath(mainWindow().currentProject))
diff --git a/manuskript/exporter/pandoc/__init__.py b/manuskript/exporter/pandoc/__init__.py
index d03e017..55df717 100644
--- a/manuskript/exporter/pandoc/__init__.py
+++ b/manuskript/exporter/pandoc/__init__.py
@@ -22,6 +22,8 @@ class pandocExporter(basicExporter):
     <p>Website: <a href="http://www.pandoc.org">http://pandoc.org/</a></p>
     """)
     cmd = "pandoc"
+    absentTip = "Install pandoc to benefit from a wide range of export formats (DocX, ePub, PDF, etc.)"
+    absentURL = "http://pandoc.org/installing.html"
 
     def __init__(self):
         basicExporter.__init__(self)
diff --git a/manuskript/functions.py b/manuskript/functions.py
index b7873ad..f708f9a 100644
--- a/manuskript/functions.py
+++ b/manuskript/functions.py
@@ -6,7 +6,9 @@ import re
 from random import *
 
 from PyQt5.QtCore import Qt, QRect, QStandardPaths, QObject, QRegExp, QDir
+from PyQt5.QtCore import QUrl
 from PyQt5.QtGui import QBrush, QIcon, QPainter, QColor, QImage, QPixmap
+from PyQt5.QtGui import QDesktopServices
 from PyQt5.QtWidgets import qApp, QTextEdit
 
 from manuskript.enums import Outline
@@ -355,3 +357,7 @@ def customIcons():
         ]
 
     return sorted(r)
+
+def openURL(url):
+    QDesktopServices.openUrl(QUrl(url))
+
diff --git a/manuskript/mainWindow.py b/manuskript/mainWindow.py
index b47892e..4996c09 100644
--- a/manuskript/mainWindow.py
+++ b/manuskript/mainWindow.py
@@ -1142,8 +1142,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
                     w.setDict(settings.dict)
 
     def openPyEnchantWebPage(self):
-        from PyQt5.QtGui import QDesktopServices
-        QDesktopServices.openUrl(QUrl("http://pythonhosted.org/pyenchant/"))
+        F.openURL("http://pythonhosted.org/pyenchant/")
 
     def toggleSpellcheck(self, val):
         settings.spellcheck = val
diff --git a/manuskript/ui/exporters/exporter.py b/manuskript/ui/exporters/exporter.py
index da1628c..a219efa 100644
--- a/manuskript/ui/exporters/exporter.py
+++ b/manuskript/ui/exporters/exporter.py
@@ -5,10 +5,10 @@ import os
 
 from PyQt5.QtCore import Qt
 from PyQt5.QtGui import QBrush, QColor, QIcon
-from PyQt5.QtWidgets import QWidget
+from PyQt5.QtWidgets import QWidget, QStyle
 
 from manuskript import exporter
-from manuskript.functions import lightBlue, writablePath
+from manuskript.functions import lightBlue, writablePath, openURL
 from manuskript.ui.exporters.exporter_ui import Ui_exporter
 from manuskript.ui.exporters.exportersManager import exportersManager
 
@@ -42,7 +42,7 @@ class exporterDialog(QWidget, Ui_exporter):
         self.cmbExporters.clear()
         for E in exporter.exporters:
 
-            if not E.isValid():
+            if not E.isValid() and not E.absentTip:
                 continue
 
             self.cmbExporters.addItem(QIcon(E.icon), E.name)
@@ -51,6 +51,10 @@ class exporterDialog(QWidget, Ui_exporter):
             item = self.cmbExporters.model().item(self.cmbExporters.count() - 1)
             item.setFlags(Qt.ItemIsEnabled)
 
+            if not E.isValid() and E.absentTip:
+                self.cmbExporters.addItem(self.style().standardIcon(QStyle.SP_MessageBoxWarning), E.absentTip, "::URL::" + E.absentURL)
+                continue
+
             for f in E.exportTo:
 
                 if not f.isValid():
@@ -60,6 +64,12 @@ class exporterDialog(QWidget, Ui_exporter):
                 self.cmbExporters.addItem(QIcon.fromTheme(f.icon), name, E.name)
 
     def updateUi(self, index):
+
+        # We check if we have an URL to open
+        data = self.cmbExporters.currentData()
+        if data and data[:7] == "::URL::" and data[7:]:
+            openURL(data[7:])
+
         E, F = self.getSelectedExporter()
 
         if not E or not F or not F.implemented:
@@ -142,4 +152,4 @@ class exporterDialog(QWidget, Ui_exporter):
             item.widget().deleteLater()
 
         l.addWidget(widget)
-        widget.setParent(group)
\ No newline at end of file
+        widget.setParent(group)