aa1dce6da2
Remove all remaining GParamSpec name and blurb strings (and fix indentation while we're there), and add G_PARAM_STATIC_STRINGS to all paramspecs that were lacking it.
669 lines
18 KiB
C
669 lines
18 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2013 Red Hat, Inc.
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*/
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/**
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* SECTION:nmt-newt-widget
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* @short_description: Base TUI Widget class
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*
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* #NmtNewtWidget is the abstract base class for nmt-newt. All widgets
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* inherit from one of its two subclasses: #NmtNewtComponent, for
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* widgets that wrap a (single) #newtComponent, and #NmtNewtContainer,
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* for widgets consisting of multiple components. See those classes
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* for more details.
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*
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* With the exception of #NmtNewtForm, all widgets start out with a
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* floating reference, which will be sunk by the container they are
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* added to. #NmtNewtForm is the "top-level" widget type, and so does
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* not have a floating reference.
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*
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* FIXME: need RTL support
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*/
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#include "config.h"
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#include "nmt-newt-widget.h"
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#include "nmt-newt-form.h"
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G_DEFINE_ABSTRACT_TYPE (NmtNewtWidget, nmt_newt_widget, G_TYPE_INITIALLY_UNOWNED)
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#define NMT_NEWT_WIDGET_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NMT_TYPE_NEWT_WIDGET, NmtNewtWidgetPrivate))
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typedef struct {
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NmtNewtWidget *parent;
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gboolean visible, realized, valid;
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gboolean exit_on_activate;
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int pad_left, pad_top, pad_right, pad_bottom;
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} NmtNewtWidgetPrivate;
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enum {
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PROP_0,
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PROP_PARENT,
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PROP_VISIBLE,
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PROP_VALID,
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PROP_EXIT_ON_ACTIVATE,
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LAST_PROP
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};
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enum {
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NEEDS_REBUILD,
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ACTIVATED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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static void
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nmt_newt_widget_init (NmtNewtWidget *widget)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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priv->visible = TRUE;
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priv->valid = TRUE;
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}
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static void
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nmt_newt_widget_finalize (GObject *object)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (object);
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nmt_newt_widget_unrealize (NMT_NEWT_WIDGET (object));
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g_clear_object (&priv->parent);
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G_OBJECT_CLASS (nmt_newt_widget_parent_class)->finalize (object);
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}
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/**
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* nmt_newt_widget_realize:
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* @widget: an #NmtNewtWidget
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*
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* "Realizes" @widget. That is, creates #newtComponents corresponding
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* to @widget and its children.
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*
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* You should not need to call this yourself; an #NmtNewtForm will
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* cause its children to be realized and unrealized as needed.
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*/
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void
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nmt_newt_widget_realize (NmtNewtWidget *widget)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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if (!priv->realized) {
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NMT_NEWT_WIDGET_GET_CLASS (widget)->realize (widget);
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priv->realized = TRUE;
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}
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}
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/**
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* nmt_newt_widget_unrealize:
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* @widget: an #NmtNewtWidget
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*
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* "Unrealizes" @widget, destroying its #newtComponents.
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*
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* You should not need to call this yourself; an #NmtNewtForm will
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* cause its children to be realized and unrealized as needed.
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*/
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void
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nmt_newt_widget_unrealize (NmtNewtWidget *widget)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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if (priv->realized) {
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NMT_NEWT_WIDGET_GET_CLASS (widget)->unrealize (widget);
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priv->realized = FALSE;
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}
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}
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/**
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* nmt_newt_widget_get_realized:
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* @widget: an #NmtNewtWidget
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*
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* Checks if @widget is realized or not.
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*
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* Returns: whether @widget is realized.
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*/
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gboolean
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nmt_newt_widget_get_realized (NmtNewtWidget *widget)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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return priv->realized;
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}
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/**
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* nmt_newt_widget_get_components:
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* @widget: an #NmtNewtWidget
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*
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* Gets the #newtComponents that make up @widget, if @widget is
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* visible. If @widget has not yet been realized, it will be realized
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* first.
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*
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* If this function is called on a widget, then the widget will assume
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* that someone else is now responsible for destroying the components,
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* and so it will not destroy them itself when the widget is
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* destroyed. Normally, components will end up being destroyed by the
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* #NmtNewtForm they are added to.
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*
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* Returns: a %NULL-terminated array of components, in focus-chain
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* order. You must free the array with g_free() when you are done
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* with it.
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*/
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newtComponent *
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nmt_newt_widget_get_components (NmtNewtWidget *widget)
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{
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if (nmt_newt_widget_get_visible (widget)) {
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nmt_newt_widget_realize (widget);
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return NMT_NEWT_WIDGET_GET_CLASS (widget)->get_components (widget);
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} else
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return NULL;
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}
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/**
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* nmt_newt_widget_find_component:
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* @widget: an #NmtNewtWidget
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* @co: a #newtComponent
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*
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* Finds the widget inside @widget that owns @co.
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*
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* Return value: @co's owner, or %NULL if it was not found.
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*/
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NmtNewtWidget *
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nmt_newt_widget_find_component (NmtNewtWidget *widget,
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newtComponent co)
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{
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return NMT_NEWT_WIDGET_GET_CLASS (widget)->find_component (widget, co);
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}
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/**
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* nmt_newt_widget_set_padding:
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* @widget: an #NmtNewtWidget
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* @pad_left: padding on the left of @widget
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* @pad_top: padding on the top of @widget
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* @pad_right: padding on the right of @widget
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* @pad_bottom: padding on the bottom of @widget
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*
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* Sets the padding on @widget.
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*/
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void
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nmt_newt_widget_set_padding (NmtNewtWidget *widget,
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int pad_left,
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int pad_top,
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int pad_right,
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int pad_bottom)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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priv->pad_left = pad_left;
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priv->pad_top = pad_top;
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priv->pad_right = pad_right;
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priv->pad_bottom = pad_bottom;
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}
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/**
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* nmt_newt_widget_size_request:
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* @widget: an #NmtNewtWidget
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* @width: (out): on output, the widget's requested width
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* @height: (out): on output, the widget's requested height
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*
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* Asks @widget for its requested size. If @widget is not visible,
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* this will return 0, 0. If @widget has not yet been realized, it
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* will be realized first.
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*/
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void
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nmt_newt_widget_size_request (NmtNewtWidget *widget,
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int *width,
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int *height)
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{
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if (nmt_newt_widget_get_visible (widget)) {
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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nmt_newt_widget_realize (widget);
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NMT_NEWT_WIDGET_GET_CLASS (widget)->size_request (widget, width, height);
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*width += priv->pad_left + priv->pad_right;
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*height += priv->pad_top + priv->pad_bottom;
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} else
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*width = *height = 0;
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}
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/**
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* nmt_newt_widget_size_allocate:
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* @widget: an #NmtNewtWidget
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* @x: the widget's (absolute) X coordinate
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* @y: the widget's (absolute) Y coordinate
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* @width: the widget's allocated width
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* @height: the widget's allocated height
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*
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* Positions @widget at the given coordinates, with the given size. If
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* @widget is not visible, this has no effect. If @widget has not yet
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* been realized, it will be realized first.
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*
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* @x and @y are absolute coordinates (ie, relative to the screen /
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* terminal window, not relative to @widget's parent).
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*
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* In general, the results are undefined if @width or @height is less
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* than the widget's requested size. If @width or @height is larger
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* than the requested size, most #NmtNewtComponents will ignore the
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* extra space, but some components and most containers will expand to
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* fit.
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*/
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void
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nmt_newt_widget_size_allocate (NmtNewtWidget *widget,
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int x,
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int y,
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int width,
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int height)
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{
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if (nmt_newt_widget_get_visible (widget)) {
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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nmt_newt_widget_realize (widget);
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x += priv->pad_left;
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y += priv->pad_top;
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width -= priv->pad_left + priv->pad_right;
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height -= priv->pad_top + priv->pad_bottom;
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NMT_NEWT_WIDGET_GET_CLASS (widget)->size_allocate (widget, x, y, width, height);
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}
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}
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/**
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* nmt_newt_widget_get_focus_component:
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* @widget: an #NmtNewtWidget
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*
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* Gets the #newtComponent that should be given the keyboard focus when
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* @widget is focused.
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*
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* Returns: the #newtComponent to focus, or %NULL if @widget can't
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* take the focus.
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*/
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newtComponent
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nmt_newt_widget_get_focus_component (NmtNewtWidget *widget)
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{
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if (!NMT_NEWT_WIDGET_GET_CLASS (widget)->get_focus_component)
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return NULL;
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return NMT_NEWT_WIDGET_GET_CLASS (widget)->get_focus_component (widget);
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}
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static void
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nmt_newt_widget_real_activated (NmtNewtWidget *widget)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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if (priv->exit_on_activate)
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nmt_newt_form_quit (nmt_newt_widget_get_form (widget));
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}
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/**
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* nmt_newt_widget_activated:
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* @widget: an #NmtNewtWidget
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*
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* Tells @widget that its #newtComponent has been activated (ie, the
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* user hit "Return" on it) and emits #NmtNewtWidget::activated.
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*
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* If #NmtNewtWidget:exit-on-activate is set on @widget, then this
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* will call nmt_newt_form_quit() on the widget's form.
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*/
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void
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nmt_newt_widget_activated (NmtNewtWidget *widget)
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{
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g_signal_emit (widget, signals[ACTIVATED], 0);
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}
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/**
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* nmt_newt_widget_get_exit_on_activate:
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* @widget: an #NmtNewtWidget
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*
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* Gets @widget's #NmtNewtWidget:exit-on-activate flag, qv.
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*
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* Returns: @widget's #NmtNewtWidget:exit-on-activate flag
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*/
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gboolean
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nmt_newt_widget_get_exit_on_activate (NmtNewtWidget *widget)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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return priv->exit_on_activate;
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}
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/**
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* nmt_newt_widget_set_exit_on_activate:
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* @widget: an #NmtNewtWidget
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* @exit_on_activate: whether @widget should exit on activate.
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*
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* Sets @widget's #NmtNewtWidget:exit-on-activate flag, qv.
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*/
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void
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nmt_newt_widget_set_exit_on_activate (NmtNewtWidget *widget,
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gboolean exit_on_activate)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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exit_on_activate = !!exit_on_activate;
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if (priv->exit_on_activate != exit_on_activate) {
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priv->exit_on_activate = exit_on_activate;
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g_object_notify (G_OBJECT (widget), "exit-on-activate");
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}
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}
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/**
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* nmt_newt_widget_get_visible:
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* @widget: an #NmtNewtWidget
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*
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* Gets @widget's #NmtNewtWidget:visible flag, qv.
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*
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* Returns: @widget's #NmtNewtWidget:visible flag
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*/
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gboolean
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nmt_newt_widget_get_visible (NmtNewtWidget *widget)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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return priv->visible;
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}
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/**
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* nmt_newt_widget_set_visible:
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* @widget: an #NmtNewtWidget
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* @visible: whether @widget should be visible
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*
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* Sets @widget's #NmtNewtWidget:visible flag, qv.
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*/
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void
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nmt_newt_widget_set_visible (NmtNewtWidget *widget,
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gboolean visible)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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visible = !!visible;
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if (priv->visible != visible) {
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priv->visible = visible;
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g_object_notify (G_OBJECT (widget), "visible");
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nmt_newt_widget_needs_rebuild (widget);
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}
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}
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/**
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* nmt_newt_widget_set_parent:
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* @widget: an #NmtNewtWidget
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* @parent: @widget's parent
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*
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* Sets @widget's parent to @parent. This is used internally by
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* #NmtNewtContainer implementations; you must use an appropriate
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* container-specific method to actually add a widget to a container.
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*/
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void
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nmt_newt_widget_set_parent (NmtNewtWidget *widget,
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NmtNewtWidget *parent)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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g_clear_object (&priv->parent);
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priv->parent = parent ? g_object_ref (parent) : NULL;
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g_object_notify (G_OBJECT (widget), "parent");
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}
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/**
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* nmt_newt_widget_get_parent:
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* @widget: an #NmtNewtWidget
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*
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* Gets @widget's parent
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*
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* Returns: @widget's parent
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*/
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NmtNewtWidget *
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nmt_newt_widget_get_parent (NmtNewtWidget *widget)
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{
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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return priv->parent;
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}
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/**
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* nmt_newt_widget_get_form:
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* @widget: an #NmtNewtWidget
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*
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* Gets @widget's top-level form.
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*
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* Returns: @widget's #NmtNewtForm
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*/
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NmtNewtForm *
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nmt_newt_widget_get_form (NmtNewtWidget *widget)
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{
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while (widget) {
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if (NMT_IS_NEWT_FORM (widget))
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return NMT_NEWT_FORM (widget);
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widget = nmt_newt_widget_get_parent (widget);
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}
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return NULL;
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}
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/**
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* nmt_newt_widget_get_valid:
|
|
* @widget: an #NmtNewtWidget
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*
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* Gets @widget's #NmtNewtWidget:valid flag, indicating whether its
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* content is valid.
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*
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* Returns: @widget's #NmtNewtWidget:valid flag
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*/
|
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gboolean
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nmt_newt_widget_get_valid (NmtNewtWidget *widget)
|
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{
|
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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return priv->valid;
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}
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/**
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* nmt_newt_widget_set_valid:
|
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* @widget: an #NmtNewtWidget
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* @valid: whether @widget is valid
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*
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* Sets @widget's #NmtNewtWidget:valid flag, indicating whether its
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* content is valid.
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*
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|
* This method should be considered "protected"; if you change it, the
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* widget implementation will likely just change it back at some
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* point.
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*/
|
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void
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nmt_newt_widget_set_valid (NmtNewtWidget *widget,
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gboolean valid)
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{
|
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NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (widget);
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|
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valid = !!valid;
|
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if (priv->valid == valid)
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return;
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priv->valid = valid;
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g_object_notify (G_OBJECT (widget), "valid");
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}
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/**
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|
* nmt_newt_widget_needs_rebuilds:
|
|
* @widget: an #NmtNewtWidget
|
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*
|
|
* Marks @widget as needing to be "rebuilt" (ie, re-realized). This is
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* called automatically in some cases (such as when adding a widget to
|
|
* or removing it from a container). #NmtNewtComponent implementations
|
|
* should also call this if they need to make some change that can
|
|
* only be done by destroying their current #newtComponent and
|
|
* creating a new one.
|
|
*/
|
|
void
|
|
nmt_newt_widget_needs_rebuild (NmtNewtWidget *widget)
|
|
{
|
|
g_signal_emit (widget, signals[NEEDS_REBUILD], 0);
|
|
}
|
|
|
|
static void
|
|
nmt_newt_widget_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
NmtNewtWidget *widget = NMT_NEWT_WIDGET (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PARENT:
|
|
nmt_newt_widget_set_parent (widget, g_value_get_object (value));
|
|
break;
|
|
case PROP_VISIBLE:
|
|
nmt_newt_widget_set_visible (widget, g_value_get_boolean (value));
|
|
break;
|
|
case PROP_EXIT_ON_ACTIVATE:
|
|
nmt_newt_widget_set_exit_on_activate (widget, g_value_get_boolean (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
nmt_newt_widget_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
NmtNewtWidgetPrivate *priv = NMT_NEWT_WIDGET_GET_PRIVATE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PARENT:
|
|
g_value_set_object (value, priv->parent);
|
|
break;
|
|
case PROP_VISIBLE:
|
|
g_value_set_boolean (value, priv->visible);
|
|
break;
|
|
case PROP_VALID:
|
|
g_value_set_boolean (value, priv->valid);
|
|
break;
|
|
case PROP_EXIT_ON_ACTIVATE:
|
|
g_value_set_boolean (value, priv->exit_on_activate);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
nmt_newt_widget_class_init (NmtNewtWidgetClass *widget_class)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (widget_class);
|
|
|
|
g_type_class_add_private (widget_class, sizeof (NmtNewtWidgetPrivate));
|
|
|
|
/* virtual methods */
|
|
object_class->set_property = nmt_newt_widget_set_property;
|
|
object_class->get_property = nmt_newt_widget_get_property;
|
|
object_class->finalize = nmt_newt_widget_finalize;
|
|
|
|
widget_class->activated = nmt_newt_widget_real_activated;
|
|
|
|
/* signals */
|
|
|
|
/**
|
|
* NmtNewtWidget::needs-rebuild:
|
|
* @widget: the #NmtNewtWidget
|
|
*
|
|
* Emitted when nmt_newt_widget_need_rebuild() is called on @widget
|
|
* or any of its children. This signal propagates up the container
|
|
* hierarchy, eventually reaching the top-level #NmtNewtForm.
|
|
*/
|
|
signals[NEEDS_REBUILD] =
|
|
g_signal_new ("needs-rebuild",
|
|
G_OBJECT_CLASS_TYPE (object_class),
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET (NmtNewtWidgetClass, needs_rebuild),
|
|
NULL, NULL, NULL,
|
|
G_TYPE_NONE, 0);
|
|
|
|
/**
|
|
* NmtNewtWidget::activated:
|
|
* @widget: the #NmtNewtWidget
|
|
*
|
|
* Emitted when the widget's #newtComponent is activated.
|
|
*/
|
|
signals[ACTIVATED] =
|
|
g_signal_new ("activated",
|
|
G_OBJECT_CLASS_TYPE (object_class),
|
|
G_SIGNAL_RUN_FIRST,
|
|
G_STRUCT_OFFSET (NmtNewtWidgetClass, activated),
|
|
NULL, NULL, NULL,
|
|
G_TYPE_NONE, 0);
|
|
|
|
/* properties */
|
|
|
|
/**
|
|
* NmtNewtWidget:parent:
|
|
*
|
|
* The widget's parent widget, or %NULL if it has no parent.
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_PARENT,
|
|
g_param_spec_object ("parent", "", "",
|
|
NMT_TYPE_NEWT_WIDGET,
|
|
G_PARAM_READABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* NmtNewtWidget:visible:
|
|
*
|
|
* Whether the widget is visible. Invisible widgets do not get
|
|
* realized or sized.
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_VISIBLE,
|
|
g_param_spec_boolean ("visible", "", "",
|
|
TRUE,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* NmtNewtWidget:valid:
|
|
*
|
|
* Whether the widget's content is considered valid. Components
|
|
* determine their own validity. A container, by default, is
|
|
* considered valid if all of its children are valid.
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_VALID,
|
|
g_param_spec_boolean ("valid", "", "",
|
|
TRUE,
|
|
G_PARAM_READABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
/**
|
|
* NmtNewtWidget:exit-on-activate:
|
|
*
|
|
* If %TRUE, the widget will call nmt_newt_form_quit() on its form
|
|
* when it is activated.
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_EXIT_ON_ACTIVATE,
|
|
g_param_spec_boolean ("exit-on-activate", "", "",
|
|
FALSE,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
}
|