# BiaWeb Website content manager (c) 2010 V.Harishankar
# Article dialog class

import PyQt4
import ui_article_dialog
import highlighter

class ArticleDialog (PyQt4.QtGui.QDialog, ui_article_dialog.Ui_ArticleDialog):
	def __init__ (self, parent):
		PyQt4.QtGui.QDialog.__init__ (self, parent)
		self.setupUi (self)
		# set window to be able to be maximized or minimized
		self.setWindowFlags (PyQt4.QtCore.Qt.Window)
		# set the code highlighter to the document
		self.hltext = highlighter.SimpleHtmlHighlighter (self.content.document ())

	# when rejected, confirm first
	def reject (self):
		ans = PyQt4.QtGui.QMessageBox.question (self, "Confirm",
					"Are you sure you wish to cancel all changes?",
					PyQt4.QtGui.QMessageBox.Yes, PyQt4.QtGui.QMessageBox.No)
		if ans == PyQt4.QtGui.QMessageBox.Yes:
			PyQt4.QtGui.QDialog.reject (self)

	# when accepted check the data
	def accept (self):
		title = str (self.article_title.text ()).strip ()
		content = str (self.content.toPlainText ()).strip ()
		stub = str (self.stub.text ()).strip ()

		if title <> "" and content <> "" and stub <> "":
			PyQt4.QtGui.QDialog.accept (self)
		else:
			PyQt4.QtGui.QMessageBox.critical (self, "Missing fields", "Some required fields are missing")

	# populate categories in combo box
	def populate_categories (self, category_list, selected_cat = None):
		for catid, catname, catdesc, stub in category_list:
			self.category.addItem (catname, int (catid))

		# set the index to the selected category item
		if selected_cat is not None:
			self.category.setCurrentIndex (self.category.findData (selected_cat))

	# when bold is clicked
	def onBold (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		boldsel = "<b>" + sel + "</b>"
		textcur.insertText (boldsel)

	# when block quote is clicked
	def onBQuote (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		quotesel = "<blockquote>\n" + sel + "\n</blockquote>"
		textcur.insertText (quotesel)

	# when bullet is clicked
	def onBullet (self):
		# insert bulleted list
		self.insert_list_items ()

	# when code is clicked
	def onCode (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		codesel = "<code>" + str (sel) + "</code>"
		textcur.insertText (codesel)

	# when horiz rule is clicked
	def onHRule (self):
		textcur = self.content.textCursor ()
		hrule = "\n<hr />\n"
		textcur.clearSelection ()
		textcur.insertText (hrule)

	# when image is clicked
	def onImage (self):
		img_url, ok = PyQt4.QtGui.QInputDialog.getText (self, "Image URL", "URL of the image to insert")
		if not ok or img_url.isEmpty ():
			return
		alt_txt, ok = PyQt4.QtGui.QInputDialog.getText (self, "Alt text", "Alternate text of the image")
		if not ok or alt_txt.isEmpty ():
			return

		textcur = self.content.textCursor ()
		imgtag = '<img src="' + img_url + '" alt="' + alt_txt + '" />'
		textcur.clearSelection ()
		textcur.insertText (imgtag)

	# when italic is clicked
	def onItalic (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		italsel = "<i>" + sel + "</i>"
		textcur.insertText (italsel)

	# when link is clicked
	def onLink (self):
		linkhref, ok = PyQt4.QtGui.QInputDialog.getText (self, "Link URL", "URL of the link to insert")
		if not ok or linkhref.isEmpty ():
			return
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		linksel = '<a href="' + linkhref + '">' + sel + "</a>"
		textcur.insertText (linksel)

	# when numbered is clicked
	def onNumber (self):
		# numbered list
		self.insert_list_items (True)

	# get a list of items in numbered or bulleted list
	def insert_list_items (self, numbered = False):
		if numbered:
			title = "Numbered list"
			otag = "\n<ol>\n"
			ctag = "</ol>\n"
		else:
			title = "Bulleted list"
			otag = "\n<ul>\n"
			ctag = "</ul>\n"

		itemlist = [ otag ]
		while True:
			num_item, ok = PyQt4.QtGui.QInputDialog.getText (self, title,
							"List item content (leave blank to finish the list)")
			# if cancelled quit
			if not ok:
				return
			# if item is empty then close the list
			if num_item.isEmpty ():
				break
			itemlist.append ("   <li>" + num_item + "</li>\n")
		itemlist.append (ctag)

		textcur = self.content.textCursor ()
		textcur.clearSelection ()
		for item in itemlist:
			textcur.insertText (item)


	# when center is clicked
	def onCenter (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		paracentersel = '<p style="text-align:center;">' + sel + "</p>"
		textcur.insertText (paracentersel)

	# when justify is clicked
	def onJustify (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		parajustsel = '<p style="text-align:justify;">' + sel + "</p>"
		textcur.insertText (parajustsel)

	# when left is clicked
	def onLeft (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		paraleftsel = '<p style="text-align:left;">' + sel + "</p>"
		textcur.insertText (paraleftsel)

	# when right is clicked
	def onRight (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		pararightsel = '<p style="text-align:right;">' + sel + "</p>"
		textcur.insertText (pararightsel)

	# when pre is clicked
	def onPre (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		presel = "<pre>" + sel + "</pre>"
		textcur.insertText (presel)

	# when para is clicked
	def onPara (self):
		textcur = self.content.textCursor ()
		sel = textcur.selectedText ()
		parasel = "<p>" + sel + "</p>"
		textcur.insertText (parasel)

	# when table is clicked
	def onTable (self):
		# get the number of rows
		rows, ok = PyQt4.QtGui.QInputDialog.getInt (self, "Table", "Number of table rows")
		if not ok:
			return
		# get the number of columns
		cols, ok = PyQt4.QtGui.QInputDialog.getInt (self, "Table", "Number of table columns")
		if not ok:
			return
		# should there be a header row?
		headerflag = PyQt4.QtGui.QMessageBox.question (self, "Header", "Do you want additional header row?",
													PyQt4.QtGui.QMessageBox.Yes, PyQt4.QtGui.QMessageBox.No,
													PyQt4.QtGui.QMessageBox.Cancel)
		if headerflag == PyQt4.QtGui.QMessageBox.Cancel:
			return

		# build the table tag
		tablelist = ["\n<table>\n"]
		if headerflag == PyQt4.QtGui.QMessageBox.Yes:
			tablelist.append (" <thead>\n")
			tablelist.append ("  <tr>\n")
			for i in range (cols):
				tablelist.append ("   <th></th>\n")
			tablelist.append ("  </tr>\n")
			tablelist.append (" </thead>\n")

		tablelist.append (" <tbody>\n")
		for j in range (rows):
			tablelist.append ("  <tr>\n")
			for i in range (cols):
				tablelist.append ("   <td></td>\n")
			tablelist.append ("  </tr>\n")
		tablelist.append (" </tbody>\n")
		tablelist.append ("</table>\n")

		# insert the table
		textcur = self.content.textCursor ()
		textcur.clearSelection ()
		for item in tablelist:
			textcur.insertText (item)



	# when break is clicked
	def onBreak (self):
		textcur = self.content.textCursor ()
		breaktxt = "<br />\n"
		textcur.clearSelection ()
		textcur.insertText (breaktxt)