Reorganisation of the gui-part :) (again ;P)

1 files changed, 238 insertions, 0 deletions

diff --git a/geneticone/gui/gui_helper.py b/geneticone/gui/gui_helper.py
new file mode 100644
index 0000000..5801d1a
--- /dev/null
+++ b/geneticone/gui/gui_helper.py
@@ -0,0 +1,238 @@
+#
+# File: geneticone/gui/gui_helper.py
+# This file is part of the Genetic/One-Project, a graphical portage-frontend.
+#
+# Copyright (C) 2006 Necoro d.M.
+# This is free software.  You may redistribute copies of it under the terms of
+# the GNU General Public License version 2.
+# There is NO WARRANTY, to the extent permitted by law.
+#
+# Written by Necoro d.M. <necoro@necoro.net>
+
+import geneticone
+from geneticone import flags
+
+from subprocess import *
+from threading import Thread
+
+import pty
+import vte
+
+class EmergeQueue:
+	"""This class manages the emerge queue."""
+	
+	def __init__ (self, tree = None, console = None, packages = None):
+		"""Constructor.
+		
+		@param tree: Tree to append all the items to. Default: None.
+		@type tree: gtk.TreeStore
+		@param console: Output is shown here. Default: None
+		@type console: vte.Terminal
+		@param packages: The list of packages sorted by categories. We will delete the appropriate category if we updated sth. Default: None
+		@type packages: dictionary: {category: list_of_packages}."""
+		
+		self.mergequeue = []
+		self.unmergequeue = []
+		self.iters = {}
+		self.deps = {}
+		self.tree = tree
+		self.console = console
+		self.packages = packages
+
+		if self.tree: 
+			self.emergeIt = self.tree.append(None, ["Emerge"])
+			self.unmergeIt = self.tree.append(None, ["Unmerge"])
+		else:
+			self.emergeIt = self.unmergeIt = None
+
+	def update_tree (self, it, cpv):
+		"""This updates the tree recursivly. 
+
+		@param it: iterator where to append
+		@type it: gtk.TreeIter
+		@param cpv: The package to append.
+		@type cpv: string (cat/pkg-ver)
+		
+		@raise geneticone.BlockedException: When occured during dependency-calculation."""
+		
+		# get depencies
+		if cpv in self.deps:
+			return # in list already
+		else:
+			deps = geneticone.find_packages("="+cpv)[0].get_dep_packages()
+			self.deps.update({cpv : deps})
+		
+		subIt = self.tree.append(it, [cpv])
+		
+		# recursive call
+		for d in deps:
+			try:
+				self.update_tree(subIt, d)
+			except geneticone.BlockedException, e:
+				# remove the project
+				while self.tree.iter_parent(subIt):
+					subIt = self.tree.iter_parent(subIt)
+				self.remove_children(subIt)
+				raise e
+		
+		# add iter
+		self.iters.update({cpv: subIt})
+
+	def append (self, cpv, unmerge = False, update = False):
+		"""Appends a cpv either to the merge queue or to the unmerge-queue.
+		Also updates the tree-view.
+		
+		@param cpv: Package to add
+		@type cpv: string (cat/pkg-ver)
+		@param unmerge: Set to True if you want to unmerge this package - else False. Default: False
+		@type unmerge: boolean
+		@param update: Set to True if a package is going to be updated (e.g. if the use-flags changed). Default: False
+		@type update: boolean"""
+		
+		if not unmerge:
+			try:
+				# insert dependencies
+				pkg = geneticone.find_packages("="+cpv)[0]
+				deps = pkg.get_dep_packages()
+				
+				if update:
+					if deps == self.deps[cpv]:
+						return # nothing changed - return
+					else:
+						parentIt = self.tree.iter_parent(self.iters[cpv])
+						self.remove_children(self.iters[cpv], False) # this is needed to def delete everything
+						self.remove(self.iters[cpv], False)
+						self.update_tree(parentIt, cpv)
+				else: # not update
+					self.mergequeue.append(cpv)
+					if self.emergeIt: self.update_tree(self.emergeIt, cpv)
+			
+			except geneticone.BlockedException, e : # there is sth blocked --> call blocked_dialog
+				blocks = e[0]
+				blocked_dialog(cpv, blocks)
+				return
+		else: # unmerge
+			self.unmergequeue.append(cpv)
+			if self.unmergeIt: # update tree
+				self.tree.append(self.unmergeIt, [cpv])
+	
+	def _update_packages(self, packages, process = None):
+		"""This updates the packages-list. It simply removes all affected categories so they have to be rebuilt.
+		
+		@param packages: The packages which we emerged.
+		@type packages: list of cpvs
+		@param process: The process we have to wait for before we can do our work. Default: None.
+		@type process: subprocess.Popen"""
+
+		if process: process.wait()
+		for p in packages:
+			try:
+				cat = geneticone.split_package_name(p)[0] # get category
+				while cat[0] in ["=",">","<","!"]:
+					cat = cat[1:]
+				print "Category: "+cat ,
+				del self.packages[cat]
+				print "marked for refreshing"
+			except KeyError: # not in self.packages - ignore
+				pass
+
+	def _emerge (self, options, packages, it):
+		"""Calls emerge and updates the terminal.
+		
+		@param options: options to send to emerge
+		@type options: list
+		@param packages: packages to emerge
+		@type packages: list
+		@param it: Iterator which points to an entry whose children will be removed after completion.
+		@type it: gtk.TreeIter"""
+
+		# open tty
+		(master, slave) = pty.openpty()
+		self.console.set_pty(master)
+		
+		# start emerge
+		process = Popen(["/usr/bin/python","/usr/bin/emerge"]+options+packages, stdout = slave, stderr = STDOUT, shell = False)
+		Thread(target=self._update_packages, args=(packages, process)).start()
+		
+		# remove
+		self.remove_children(it)
+
+	def emerge (self, force = False):
+		"""Emerges everything in the merge-queue.
+		
+		@param force: If False, '-pv' is send to emerge. Default: False.
+		@type force: boolean"""
+
+		if len(self.mergequeue) == 0: return # nothing in queue
+		
+		# prepare package-list
+		list = []
+		for k in self.mergequeue:
+			list += ["="+k]
+		
+		s = []
+		if not force: s = ["-pv"]
+		
+		self._emerge(s, list, self.emergeIt)
+
+	def unmerge (self, force = False):
+		"""Unmerges everything in the umerge-queue.
+
+		@param force: If False, '-pv' is send to emerge. Default: False.
+		@type force: boolean"""
+		
+		if len(self.unmergequeue) == 0: return # nothing in queue
+
+		list = self.unmergequeue[:] # copy the unmerge-queue
+		
+		# set options
+		s = ["-C"]
+		if not force: s = ["-Cpv"]
+		
+		self._emerge(s,list, self.unmergeIt)
+
+	def remove_children (self, parentIt, removeNewFlags = True):
+		"""Removes all children of a given parent TreeIter recursivly.
+		
+		@param parentIt: The iter from which to remove all children.
+		@type parentIt: gtk.TreeIter
+		@param removeNewFlags: True if new flags should be removed; False otherwise. Default: True.
+		@type removeNewFlags: boolean"""
+
+		childIt = self.tree.iter_children(parentIt)
+
+		while childIt:
+			if (self.tree.iter_has_child(childIt)): # recursive call
+				self.remove_children(childIt, removeNewFlags)
+			temp = childIt
+			childIt = self.tree.iter_next(childIt)
+			self.remove(temp, removeNewFlags)
+
+	def remove (self, it, removeNewFlags = True):
+		"""Removes a specific item in the tree. This does not remove the top-entries.
+		
+		@param it: Iterator which points to the entry we are going to remove.
+		@type it: gtk.TreeIter
+		@param removeNewFlags: True if new flags should be removed; False otherwise. Default: True.
+		@type removeNewFlags: boolean"""
+		
+		if self.tree.iter_parent(it): # NEVER remove our top stuff
+			cpv = self.tree.get_value(it,0)
+			if self.tree.get_string_from_iter(it).split(":")[0] == self.tree.get_string_from_iter(self.emergeIt): # in Emerge
+				del self.iters[cpv]
+				del self.deps[cpv]
+				try:
+					self.mergequeue.remove(cpv)
+				except ValueError: # this is a dependency - ignore
+					pass
+				if removeNewFlags: flags.remove_new_use_flags(cpv)
+			
+			else: # in Unmerge
+				self.unmergequeue.remove(cpv)
+			
+			self.tree.remove(it)
+
+def blocked_dialog (blocked, blocks):
+	dialog = gtk.MessageDialog(None, gtk.DIALOG_MODAL, gtk.MESSAGE_ERROR, gtk.BUTTONS_OK, blocked+" is blocked by "+blocks+".\nPlease unmerge the blocking package.")
+	dialog.run()
+	dialog.destroy()