summaryrefslogtreecommitdiff
path: root/wikipedia/PrebuiltCategoryPage.js
blob: debf6a8b3a8e7718649749a0f5b99e66e4aec702 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
const Endless = imports.gi.Endless;
const Gettext = imports.gettext;
const GLib = imports.gi.GLib;
const GObject = imports.gi.GObject;
const Gtk = imports.gi.Gtk;
const Lang = imports.lang;

const BoxWithBg = imports.wikipedia.widgets.BoxWithBg;
const CompositeButton = imports.wikipedia.widgets.composite_button;
const Config = imports.wikipedia.config;
const FixedSizeTextView = imports.wikipedia.widgets.FixedSizeTextView;
const ScaledImage = imports.wikipedia.widgets.scaled_image;

const SHADOW_SEPARATOR_RESOURCE_PATH = "/com/endlessm/wikipedia-domain/assets/submenu_separator_shadow_a.png";
const INTRO_TITLE_SEPARATOR_URI = "/com/endlessm/wikipedia-domain/assets/introduction_title_separator.png";
const CATEGORY_BACK_BUTTON_ASSET_RESOURCE_URI = 'resource:///com/endlessm/wikipedia-domain/assets/wikipedia-category-back-symbolic.svg';
const CATEGORY_BACK_BUTTON_SIZE_PIXELS = 68;
const LEFT_MARGIN_FOR_TEXT = 45;

GObject.ParamFlags.READWRITE = GObject.ParamFlags.READABLE | GObject.ParamFlags.WRITABLE;

const _ = function(string) { return GLib.dgettext('eos-sdk', string); };
Gettext.bindtextdomain('eos-sdk', Config.DATADIR + '/locale');

function _resourceUriToPath(uri) {
    if(uri.startsWith('resource://'))
        return uri.slice('resource://'.length);
    throw new Error('Resource URI did not start with "resource://"');
}

const PrebuiltCategoryPage = new Lang.Class({
    Name: 'PrebuiltCategoryPage',
    Extends: Gtk.Frame,
    Properties: {
        'title': GObject.ParamSpec.string('title',
            'Name of category',
            'Name of the category to be displayed at the top of the category page',
            GObject.ParamFlags.READWRITE | GObject.ParamFlags.CONSTRUCT,
            ''),
        'description': GObject.ParamSpec.string('description',
            'Description',
            'Description of the category (excerpt from Wiki text)',
            GObject.ParamFlags.READWRITE | GObject.ParamFlags.CONSTRUCT,
            ''),
        // resource URI for the category's accompanying image
        'image-uri': GObject.ParamSpec.string('image-uri',
            'Image URI',
            'Resource URI for the image file accompanying the category',
            GObject.ParamFlags.READWRITE | GObject.ParamFlags.CONSTRUCT,
            '')
    },

    Signals: {
        'go-back-home':{}
    },

    _init: function(props) {
        this._shaded_box = new BoxWithBg.BoxWithBg({
            name: "category_info",
            orientation: Gtk.Orientation.VERTICAL,
            vexpand: true
        });

        this._title = null;
        this._description = null;

        this._layout_grid = new Gtk.Grid({
            orientation: Gtk.Orientation.HORIZONTAL,
            hexpand: true,
            halign: Gtk.Align.END
        });

        this._title_label = new Gtk.Label({
            name:"category_title",
            expand: false,
            halign: Gtk.Align.START,
            margin_left: LEFT_MARGIN_FOR_TEXT,
            xalign: 0.0, // deprecated Gtk.Misc property; necessary because
            wrap: true,  // "wrap" doesn't respect "halign"
            width_chars: 15,
            max_width_chars: 18
        });

        this._submenu_separator = new ScaledImage.ScaledImage({
            resource: SHADOW_SEPARATOR_RESOURCE_PATH,
            constraint: Gtk.Orientation.VERTICAL,
            halign: Gtk.Align.END
        });

        this._splash_separator = new ScaledImage.ScaledImage({
            resource: SHADOW_SEPARATOR_RESOURCE_PATH,
            constraint: Gtk.Orientation.VERTICAL,
            halign: Gtk.Align.END
        });

        this._description_separator = new ScaledImage.ScaledImage({
            resource: INTRO_TITLE_SEPARATOR_URI,
            constraint: Gtk.Orientation.HORIZONTAL
        });

        this._description_text_view = new FixedSizeTextView.FixedSizeTextView({
            name:"category_description",
            sensitive: false,
            editable: false,
            cursor_visible: false
        });

        this._description_text_view.set_pixels_inside_wrap(10);
        this._description_text_view.set_wrap_mode(Gtk.WrapMode.WORD);
        this._description_text_view.right_margin = 20;

        this._description_scrolled_window = new Gtk.ScrolledWindow({
            name: 'category_scrolled_window',
            halign: Gtk.Align.FILL,
            vexpand: true,
            margin_left: LEFT_MARGIN_FOR_TEXT
        });

        this._description_scrolled_window.add(this._description_text_view);

        this._description_scrolled_window.set_policy(Gtk.PolicyType.NEVER,
            Gtk.PolicyType.AUTOMATIC);

        let gicon = new Gio.FileIcon({
            file: Gio.File.new_for_uri(CATEGORY_BACK_BUTTON_ASSET_RESOURCE_URI)
        });
        let backButtonIcon = Gtk.Image.new_from_gicon(gicon,
            Gtk.IconSize.DIALOG);
        backButtonIcon.pixel_size = CATEGORY_BACK_BUTTON_SIZE_PIXELS;
        let backButtonLabel = new Gtk.Label({
            label: _("OTHER CATEGORIES")
        });
        let backButtonInnerGrid = new Gtk.Grid();
        this._back_button = new CompositeButton.CompositeButton({
            name: "category-back-button",
            expand: true,
            halign: Gtk.Align.START,
            valign: Gtk.Align.CENTER
        });
        backButtonInnerGrid.add(backButtonIcon);
        backButtonInnerGrid.add(backButtonLabel);
        this._back_button.add(backButtonInnerGrid);
        this._back_button.setSensitiveChildren([
            backButtonIcon,
            backButtonLabel
        ]);

        this._back_button.connect('clicked', Lang.bind(this, function() {
            this.emit('go-back-home');
        }));

        this.parent(props);

        this._shaded_box.add(this._title_label);
        this._shaded_box.add(this._description_separator);
        this._shaded_box.add(this._description_scrolled_window);

        this._layout_grid.add(this._splash_separator);
        this._layout_grid.add(this._shaded_box);
        
        this._overlay = new Gtk.Overlay({
            halign: Gtk.Align.END
        });
        this._overlay.add(this._layout_grid);
        this._overlay.add_overlay(this._submenu_separator);

        this._outer_most_grid = new Gtk.Grid({
            orientation: Gtk.Orientation.HORIZONTAL
        });
        this._outer_most_grid.add(this._back_button);
        this._outer_most_grid.add(this._overlay);

        this.add(this._outer_most_grid);
        this._category_provider = new Gtk.CssProvider();

        // Add style contexts for CSS
        let context = this.get_style_context();
        context.add_class(EndlessWikipedia.STYLE_CLASS_CATEGORY_PAGE);
    },

    get title() {
        return this._title;
    },

    set title(value) {
        this._title = value;
        if(this._title_label)
            this._title_label.label = value.toUpperCase();
    },

    get description() {
        return this._description;
    },

    set description(value) {
        this._description = value;
        if(this._description_text_view)
            this._description_text_view.buffer.set_text(value, -1);
    },

    get image_uri(){
        return this._image_uri;
    },

    set image_uri(value){
        this._image_uri = value;
        let frame_css = "#category_frame{background-image: url('" + value + "');background-repeat:no-repeat;background-size:cover;}";
        this._category_provider.load_from_data(frame_css);
        let context = this.get_style_context();
        context.add_provider(this._category_provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
    }
});