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E-book viewer: Do not popup an error message if the user tries to use the mouse wheel to scroll before a document is loaded. Fixes #903449 (exception raised in ebook-viewer)
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@ -758,11 +758,12 @@ class EbookViewer(MainWindow, Ui_EbookViewer):
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self.set_page_number(frac)
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def next_document(self):
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if self.current_index < len(self.iterator.spine) - 1:
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if (hasattr(self, 'current_index') and self.current_index <
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len(self.iterator.spine) - 1):
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self.load_path(self.iterator.spine[self.current_index+1])
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def previous_document(self):
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if self.current_index > 0:
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if hasattr(self, 'current_index') and self.current_index > 0:
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self.load_path(self.iterator.spine[self.current_index-1], pos=1.0)
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def keyPressEvent(self, event):
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