bitbake: Add new UI hob, a prototype Gtk+ GUI for creating images

Hob is a first stab at implementing an interactive GUI for BitBake.

Signed-off-by: Joshua Lock <josh@linux.intel.com>

bitbake/lib/bb/ui/crumbs/hobeventhandler.py

@@ -0,0 +1,138 @@
+#
+# BitBake Graphical GTK User Interface
+#
+# Copyright (C) 2011        Intel Corporation
+#
+# Authored by Joshua Lock <josh@linux.intel.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import gobject
+from bb.ui.crumbs.progress import ProgressBar
+
+progress_total = 0
+
+class HobHandler(gobject.GObject):
+
+    """
+    This object does BitBake event handling for the hob gui.
+    """
+    __gsignals__ = {
+         "machines-updated" : (gobject.SIGNAL_RUN_LAST,
+	                       gobject.TYPE_NONE,
+			       (gobject.TYPE_PYOBJECT,)),
+	 "distros-updated" : (gobject.SIGNAL_RUN_LAST,
+	 		      gobject.TYPE_NONE,
+			      (gobject.TYPE_PYOBJECT,)),
+         "generating-data" : (gobject.SIGNAL_RUN_LAST,
+                              gobject.TYPE_NONE,
+                              ()),
+         "data-generated" : (gobject.SIGNAL_RUN_LAST,
+                             gobject.TYPE_NONE,
+                             ())
+    }
+
+    def __init__(self, taskmodel, server):
+        gobject.GObject.__init__(self)
+
+        self.model = taskmodel
+        self.server = server
+        self.current_command = None
+        self.building = False
+
+        self.command_map = {
+            "findConfigFilesDistro" : ("findConfigFiles", "MACHINE", "findConfigFilesMachine"),
+            "findConfigFilesMachine" : ("generateTargetsTree", "classes/image.bbclass", None),
+            "generateTargetsTree"  : (None, None, None),
+            }
+
+    def run_next_command(self):
+        # FIXME: this is ugly and I *will* replace it
+        if self.current_command:
+            next_cmd = self.command_map[self.current_command]
+            command = next_cmd[0]
+            argument = next_cmd[1]
+            self.current_command = next_cmd[2]
+            if command == "generateTargetsTree":
+                self.emit("generating-data")
+            self.server.runCommand([command, argument])
+
+    def handle_event(self, event, running_build, pbar=None):
+        if not event:
+	    return
+
+        # If we're running a build, use the RunningBuild event handler
+        if self.building:
+            running_build.handle_event(event)
+        elif isinstance(event, bb.event.TargetsTreeGenerated):
+            self.emit("data-generated")
+            if event._model:
+                self.model.populate(event._model)
+                
+        elif isinstance(event, bb.event.ConfigFilesFound):
+            var = event._variable
+	    if var == "distro":
+		distros = event._values
+		distros.sort()
+		self.emit("distros-updated", distros)
+	    elif var == "machine":
+	        machines = event._values
+		machines.sort()
+		self.emit("machines-updated", machines)
+
+        elif isinstance(event, bb.command.CommandCompleted):
+            self.run_next_command()
+        elif isinstance(event, bb.event.CacheLoadStarted) and pbar:
+            pbar.set_title("Loading cache")
+            bb.ui.crumbs.hobeventhandler.progress_total = event.total
+            pbar.update(0, bb.ui.crumbs.hobeventhandler.progress_total)
+        elif isinstance(event, bb.event.CacheLoadProgress) and pbar:
+            pbar.update(event.current, bb.ui.crumbs.hobeventhandler.progress_total)
+        elif isinstance(event, bb.event.CacheLoadCompleted) and pbar:
+            pbar.update(bb.ui.crumbs.hobeventhandler.progress_total, bb.ui.crumbs.hobeventhandler.progress_total)
+        elif isinstance(event, bb.event.ParseStarted) and pbar:
+            pbar.set_title("Processing recipes")
+            bb.ui.crumbs.hobeventhandler.progress_total = event.total
+            pbar.update(0, bb.ui.crumbs.hobeventhandler.progress_total)
+        elif isinstance(event, bb.event.ParseProgress) and pbar:
+            pbar.update(event.current, bb.ui.crumbs.hobeventhandler.progress_total)
+        elif isinstance(event, bb.event.ParseCompleted) and pbar:
+            pbar.hide()
+            
+        return
+
+    def event_handle_idle_func (self, eventHandler, running_build, pbar):
+        # Consume as many messages as we can in the time available to us
+        event = eventHandler.getEvent()
+        while event:
+            self.handle_event(event, running_build, pbar)
+            event = eventHandler.getEvent()
+        return True
+
+    def set_machine(self, machine):
+        self.server.runCommand(["setVariable", "MACHINE", machine])
+        self.current_command = "findConfigFilesMachine"
+        self.emit("generating-data")
+        self.run_next_command()
+
+    def set_distro(self, distro):
+        self.server.runCommand(["setVariable", "DISTRO", distro])
+
+    def run_build(self, targets):
+        self.building = True
+        self.server.runCommand(["buildTargets", targets, "build"])
+
+    def cancel_build(self):
+        # Note: this may not be the right way to stop an in-progress build
+        self.server.runCommand(["stateStop"])