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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="linkbutton.py" xml:lang="cs">
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<info>
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<title type="text">LinkButton (Python)</title>
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<link type="guide" xref="beginner.py#buttons"/>
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<link type="next" xref="checkbutton.py"/>
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<revision version="0.1" date="2012-05-23" status="draft"/>
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<credit type="author copyright">
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<name>Marta Maria Casetti</name>
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<email its:translate="no">mmcasetti@gmail.com</email>
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<years>2012</years>
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</credit>
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<desc>Tlačítko svázané s URL</desc>
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</info>
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<title>LinkButton</title>
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<media type="image" mime="image/png" src="media/linkbutton.png"/>
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Tlačítko, které odkazuje na webovou stránku.
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<links type="section"/>
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<section id="code">
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<title>Kód použitý k vygenerování tohoto příkladu</title>
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from gi.repository import Gtk
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import sys
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class MyWindow(Gtk.ApplicationWindow):
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# Okno
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def __init__(self, app):
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Gtk.Window.__init__(self, title="GNOME LinkButton", application=app)
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self.set_default_size(250, 50)
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# LinkButton odkazující na zadanou adresu URI
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button = Gtk.LinkButton(uri="http://live.gnome.org")
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# se zadaným textem
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button.set_label("Link to GNOME live!")
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# Přidá tlačítko do okna
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self.add(button)
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class MyApplication(Gtk.Application):
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def __init__(self):
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Gtk.Application.__init__(self)
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def do_activate(self):
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win = MyWindow(self)
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win.show_all()
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def do_startup(self):
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Gtk.Application.do_startup(self)
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app = MyApplication()
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exit_status = app.run(sys.argv)
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sys.exit(exit_status)
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</section>
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<section id="methods">
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<title>Užitečné metody pro widget LinkButton</title>
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<list>
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<item>get_visited() vrací stav vlastnosti visited (navštíveno) jako True nebo False pro adresu URI, na kterou LinkButton ukazuje. Tlačítko se stane „navštíveným“, když se na něj klikne. </item>
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<item>set_visited(True) nastaví stav vlastnosti visited (navštíveno) pro adresu URI, na kterou LinkButton ukazuje na True (obdobně pro False ). </item>
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<item>Pokaždé, když je kliknuto na tlačítko, je vyslán signál "activate-link" . Vysvětlení signálů a funkcí zpětného volání viz <link xref="signals-callbacks.py"/>. </item>
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</list>
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</section>
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<section id="references">
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<title>Odkazy k API</title>
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V této ukázce se používá následující:
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<list>
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<item><link href="http://developer.gnome.org/gtk3/unstable/GtkWindow.html">GtkWindow</link> </item>
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<item><link href="http://developer.gnome.org/gtk3/unstable/GtkLinkButton.html">GtkLinkButton</link> </item>
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</list>
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</section>
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</page>
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