1 files changed, 423 insertions, 0 deletions
diff --git a/python/pykde/examples/pykde-sampler/sampler.py b/python/pykde/examples/pykde-sampler/sampler.py
new file mode 100644
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--- /dev/null
+++ b/python/pykde/examples/pykde-sampler/sampler.py
@@ -0,0 +1,423 @@
+#!/usr/bin/env python
+""" The PyKDE application sampler
+
+This module defines the top-level widgets for displaying the sampler
+application.
+
+
+"""
+import inspect
+import os
+import sys
+
+from qt import SIGNAL, SLOT, PYSIGNAL, Qt
+from qt import QVBoxLayout, QLabel, QPixmap, QSplitter, QFrame, QDialog
+from qt import QSizePolicy, QHBoxLayout, QSpacerItem, QPushButton
+
+from kdecore import i18n, KAboutData, KApplication, KCmdLineArgs, KGlobal
+from kdecore import KGlobalSettings, KWin, KWinModule, KURL, KIcon
+
+from kdeui import KComboBox, KListView, KListViewItem, KTabWidget, KTextEdit
+from kdeui import KMainWindow, KPushButton, KSplashScreen, KStdAction
+from kdeui import KKeyDialog, KEditToolbar
+
+from kio import KTrader
+from kparts import createReadOnlyPart, createReadWritePart
+from khtml import KHTMLPart
+
+import about
+import lib
+
+
+try:
+    __file__
+except (NameError, ):
+    __file__ = sys.argv[0]
+
+
+sigDoubleClicked = SIGNAL('doubleClicked(QListViewItem *)')
+sigViewItemSelected = SIGNAL('selectionChanged(QListViewItem *)')
+sigSampleSelected = PYSIGNAL('sample selected')
+
+blank = KURL('about:blank')
+
+
+def appConfig(group=None):
+    """ appConfig(group=None) -> returns the application KConfig
+
+    """
+    config = KGlobal.instance().config()
+    if group is not None:
+        config.setGroup(group)
+    return config
+
+
+def getIcon(name, group=KIcon.NoGroup, size=KIcon.SizeSmall):
+    """ returns a kde icon by name
+
+    """
+    return KGlobal.instance().iconLoader().loadIcon(name, group, size)
+
+
+def getIconSet(name, group=KIcon.NoGroup, size=KIcon.SizeSmall):
+    """ returns a kde icon set by name
+
+    """
+    return KGlobal.instance().iconLoader().loadIconSet(name, group, size)
+
+
+def buildPart(parent, query, constraint, writable=False):
+    """ builds the first available offered part on the parent
+
+    """
+    offers = KTrader.self().query(query, constraint)
+    for ptr in offers:
+        if writable:
+            builder = createReadWritePart
+        else:
+            builder = createReadOnlyPart
+        part = builder(ptr.library(), parent, ptr.name())
+        if part:
+            break
+    return part
+
+
+
+class CommonFrame(QFrame):
+    """ provides a modicum of reuse
+
+    """
+    def __init__(self, parent):
+        QFrame.__init__(self, parent)
+        layout = QVBoxLayout(self)
+        layout.setAutoAdd(True)
+        layout.setAlignment(Qt.AlignCenter | Qt.AlignVCenter)
+
+
+class SamplerFrame(CommonFrame):
+    """ frame type that swaps out old widgets for new when told to do so
+
+    """
+    def __init__(self, parent):
+        CommonFrame.__init__(self, parent)
+        self.widget = None
+
+    def setWidget(self, widget):
+        self.layout().deleteAllItems()
+        previous = self.widget
+        if previous:
+            previous.close()
+            delattr(self, 'widget')
+        self.widget = widget
+
+    def showSample(self, item, module):
+        try:
+            frameType = module.builder()
+        except (AttributeError, ):
+            print 'No sample callable defined in %s' % (module.name(), )
+        else:
+            frame = frameType(self)
+            self.setWidget(frame)
+            frame.show()
+
+
+class SourceFrame(CommonFrame):
+    """ frame with part for displaying python source
+
+    """
+    def __init__(self, parent):
+        CommonFrame.__init__(self, parent)
+        query = ''
+        self.part = buildPart(self, 'application/x-python', query, False)
+
+    def showModuleSource(self, item, module):
+        if not self.part:
+            print 'No part available for displaying python source.'
+            return
+        try:
+            modulefile = inspect.getabsfile(module.module)
+        except:
+            return
+        self.part.openURL(blank)
+        if os.path.splitext(modulefile)[-1] == '.py':
+            self.part.openURL(KURL('file://%s' % modulefile))
+
+
+class WebFrame(CommonFrame):
+    """ frame with part for viewing web pages
+
+    """
+    docBase = 'http://www.riverbankcomputing.com/Docs/PyKDE3/classref/'    
+
+    def __init__(self, parent):
+        CommonFrame.__init__(self, parent)
+        self.part = part = buildPart(self, 'text/html', "Type == 'Service'")
+        #part.connect(part, SIGNAL('khtmlMousePressEvent(a)'), self.onURL)
+
+    def onURL(self, a):
+        print '****', a
+        
+    def showDocs(self, item, module):
+        try:
+            mod, cls = module.module.docParts
+        except (AttributeError, ):
+            url = blank
+        else:
+            url = KURL(self.docUrl(mod, cls))
+        self.part.openURL(url)
+
+
+    def docUrl(self, module, klass):
+        """ docUrl(name) -> return a doc url given a name from the kde libs
+    
+        """
+        return '%s/%s/%s.html' % (self.docBase, module, klass, )
+
+
+class OutputFrame(KTextEdit):
+    """ text widget that acts (just enough) like a file
+
+    """
+    def __init__(self, parent, filehandle):
+        KTextEdit.__init__(self, parent)
+        self.filehandle = filehandle
+        self.setReadOnly(True)
+        self.setFont(KGlobalSettings.fixedFont())
+
+
+    def write(self, text):
+        self.insert(text)
+
+
+    def clear(self):
+        self.setText('')
+
+
+    def __getattr__(self, name):
+        return getattr(self.filehandle, name)
+
+
+class SamplerListView(KListView):
+    """ the main list view of samples
+
+    """
+    def __init__(self, parent):
+        KListView.__init__(self, parent)
+        self.addColumn(i18n('Sample'))
+        self.setRootIsDecorated(True)
+
+        modules = lib.listmodules()
+        modules.sort(lambda a, b: cmp(a[0], b[0]))
+
+        modmap = dict(modules)
+        modules = [(name.split('.'), name, mod) for name, mod in modules]
+        roots, cache = {}, {}
+
+        for names, modname, module in modules:
+            topname, subnames = names[0], names[1:]
+            item = roots.get(topname, None)
+            if item is None:
+                roots[topname] = item = KListViewItem(self, module.labelText())
+                item.module = module
+                item.setPixmap(0, getIcon(module.icon()))
+
+            bname = ''
+            subitem = item
+            for subname in subnames:
+                bname = '%s.%s' % (bname, subname, )
+                item = cache.get(bname, None)
+                if item is None:
+                    subitem = cache[bname] = \
+                        KListViewItem(subitem, module.labelText())
+                    subitem.module = module
+                    subitem.setPixmap(0, getIcon(module.icon()))
+                subitem = item
+
+        for root in roots.values():
+            self.setOpen(root, True)
+
+        
+class SamplerMainWindow(KMainWindow):
+    """ the main window
+
+    """
+    def __init__(self, *args):
+        KMainWindow.__init__(self, *args)
+        self.hSplitter = hSplit = QSplitter(Qt.Horizontal, self)
+        self.samplesList = samplesList = SamplerListView(hSplit)
+        self.vSplitter = vSplit = QSplitter(Qt.Vertical, hSplit)
+        self.setCentralWidget(hSplit)
+        self.setIcon(getIcon('kmail'))
+
+        hSplit.setOpaqueResize(True)
+        vSplit.setOpaqueResize(True)
+
+        self.contentTabs = cTabs = KTabWidget(vSplit)
+        self.outputTabs = oTabs = KTabWidget(vSplit)
+
+        self.sampleFrame = SamplerFrame(cTabs)
+        self.sourceFrame = SourceFrame(cTabs)
+        self.webFrame = WebFrame(cTabs)
+
+        cTabs.insertTab(self.sampleFrame, getIconSet('exec'), i18n('Sample'))
+        cTabs.insertTab(self.sourceFrame, getIconSet('source'), i18n('Source'))
+        cTabs.insertTab(self.webFrame, getIconSet('help'), i18n('Docs'))
+
+        sys.stdout = self.stdoutFrame = OutputFrame(oTabs, sys.stdout)
+        sys.stderr = self.stderrFrame = OutputFrame(oTabs, sys.stderr)
+
+        termIcons = getIconSet('terminal')
+        oTabs.insertTab(self.stdoutFrame, termIcons, i18n('stdout'))
+        oTabs.insertTab(self.stderrFrame, termIcons, i18n('stderr'))
+
+        self.resize(640, 480)
+        height, width = self.height(), self.width()
+        hSplit.setSizes([width * 0.35, width * 0.65])
+        vSplit.setSizes([height * 0.80, height * 0.20])
+
+        self.xmlRcFileName = os.path.abspath(os.path.join(os.path.dirname(__file__), 'sampler.rc'))
+        self.setXMLFile(self.xmlRcFileName)
+        config = appConfig()
+        actions = self.actionCollection()
+        actions.readShortcutSettings("", config)
+        self.quitAction = KStdAction.quit(self.close, actions)
+
+        self.toggleMenubarAction = \
+            KStdAction.showMenubar(self.showMenubar, actions)
+        self.toggleToolbarAction = \
+            KStdAction.showToolbar(self.showToolbar, actions)
+        self.toggleStatusbarAction = \
+            KStdAction.showStatusbar(self.showStatusbar, actions)
+        self.configureKeysAction = \
+            KStdAction.keyBindings(self.showConfigureKeys, actions)
+        self.configureToolbarAction = \
+            KStdAction.configureToolbars(self.showConfigureToolbars, actions)
+        self.configureAppAction = \
+            KStdAction.preferences(self.showConfiguration, actions)
+
+        connect = self.connect
+        connect(samplesList, sigViewItemSelected, self.sampleSelected)
+        connect(self, sigSampleSelected, self.reloadModule)
+        connect(self, sigSampleSelected, self.sourceFrame.showModuleSource)
+        connect(self, sigSampleSelected, self.sampleFrame.showSample)
+        connect(self, sigSampleSelected, self.webFrame.showDocs)
+
+        self.restoreWindowSize(config)
+        self.createGUI(self.xmlRcFileName, 0)
+        self.sourceFrame.part.openURL(KURL('file://%s' % os.path.abspath(__file__)))
+
+
+    def showConfiguration(self):
+        """ showConfiguration() -> display the config dialog
+
+        """
+        return
+        ## not yet implemented
+        dlg = configdialog.ConfigurationDialog(self)
+        for obj in (self.stderrFrame, self.stdoutFrame, self.pythonShell):
+            call = getattr(obj, 'configChanged', None)
+            if call:
+                self.connect(dlg, util.sigConfigChanged, call)
+        dlg.show()
+
+
+    def senderCheckShow(self, widget):
+        """ senderCheckShow(widget) -> show or hide widget if sender is checked
+
+        """
+        if self.sender().isChecked():
+            widget.show()
+        else:
+            widget.hide()
+
+
+    def showMenubar(self):
+        """ showMenuBar() -> toggle the menu bar
+
+        """
+        self.senderCheckShow(self.menuBar())
+
+
+    def showToolbar(self):
+        """ showToolbar() -> toggle the tool bar
+
+        """
+        self.senderCheckShow(self.toolBar())
+
+
+    def showStatusbar(self):
+        """ showStatusbar() -> toggle the status bar
+
+        """
+        self.senderCheckShow(self.statusBar())
+
+
+    def showConfigureKeys(self):
+        """ showConfigureKeys() -> show the shortcut keys dialog
+
+        """
+        ret = KKeyDialog.configure(self.actionCollection(), self)
+        print ret
+        if ret == QDialog.Accepted:
+            actions = self.actionCollection()
+            actions.writeShortcutSettings(None, appConfig())
+
+
+    def showConfigureToolbars(self):
+        """ showConfigureToolbars() -> broken
+
+        """
+        dlg = KEditToolbar(self.actionCollection(), self.xmlRcFileName)
+        self.connect(dlg, SIGNAL('newToolbarConfig()'), self.rebuildGui)
+        #connect(self, sigSampleSelected, self.sourceFrame.showModuleSource)
+
+        dlg.exec_loop()
+
+
+    def rebuildGui(self):
+        """ rebuildGui() -> recreate the gui and refresh the palette
+
+        """
+        self.createGUI(self.xmlRcFileName, 0)
+        for widget in (self.toolBar(), self.menuBar(), ):
+            widget.setPalette(self.palette())
+
+
+    def sampleSelected(self):
+        """ sampleSelected() -> emit the current item and its module
+
+        """
+        self.stdoutFrame.clear()
+        self.stderrFrame.clear()
+        item = self.sender().currentItem()
+        self.emit(sigSampleSelected, (item, item.module))
+
+
+    def setSplashPixmap(self, pixmap):
+        """ setSplashPixmap(pixmap) -> assimilate the splash screen pixmap
+
+        """
+        target = self.sampleFrame
+        label = QLabel(target)
+        label.setPixmap(pixmap)
+        target.setWidget(label)
+
+
+    def reloadModule(self, item, module):
+        print >> sys.__stdout__, 'reload: ', reload(module.module)
+        
+
+if __name__ == '__main__':
+    aboutdata = about.about()    
+    KCmdLineArgs.init(sys.argv, aboutdata)
+    app = KApplication()
+
+    splashpix = QPixmap(os.path.join(lib.samplerpath, 'aboutkde.png'))
+    splash = KSplashScreen(splashpix)
+    splash.resize(splashpix.size())
+    splash.show()
+    mainWindow = SamplerMainWindow()
+    mainWindow.setSplashPixmap(splashpix)
+    mainWindow.show()
+    splash.finish(mainWindow)
+    app.exec_loop()