tab_bar.go Raw History Folder

1package component
2
3import (
4	"sync"
5
6	"github.com/bnema/dumber/internal/domain/entity"
7	"github.com/bnema/puregotk/v4/gtk"
8)
9
10// TabBar represents the horizontal tab bar widget.
11type TabBar struct {
12	box     *gtk.Box
13	buttons map[entity.TabID]*TabButton
14
15	explicitlyVisible bool
16	autoHidden        bool
17
18	// Active tab tracking
19	activeTabID entity.TabID
20
21	// Callbacks
22	onSwitch func(tabID entity.TabID)
23	onClose  func(tabID entity.TabID)
24	onCreate func()
25
26	mu sync.RWMutex
27}
28
29// NewTabBar creates a new tab bar widget.
30func NewTabBar() *TabBar {
31	tb := &TabBar{
32		buttons:           make(map[entity.TabID]*TabButton),
33		explicitlyVisible: true,
34	}
35
36	// Create horizontal box container
37	tb.box = gtk.NewBox(gtk.OrientationHorizontalValue, 0)
38	if tb.box == nil {
39		return nil
40	}
41
42	// Configure the box
43	tb.box.SetHexpand(true)
44	tb.box.SetVexpand(false)
45	tb.box.SetVisible(true)
46	tb.box.AddCssClass("tab-bar")
47
48	return tb
49}
50
51// Widget returns the underlying GTK widget for embedding.
52func (tb *TabBar) Widget() *gtk.Widget {
53	return &tb.box.Widget
54}
55
56// Box returns the underlying GTK box.
57func (tb *TabBar) Box() *gtk.Box {
58	return tb.box
59}
60
61// AddTab adds a new tab button to the bar.
62func (tb *TabBar) AddTab(tab *entity.Tab) {
63	tb.mu.Lock()
64	defer tb.mu.Unlock()
65
66	// Check if already exists
67	if _, exists := tb.buttons[tab.ID]; exists {
68		return
69	}
70
71	// Create the button
72	button := NewTabButton(tab)
73	if button == nil {
74		return
75	}
76
77	// Set click handler
78	button.SetOnClick(func(tabID entity.TabID) {
79		if tb.onSwitch != nil {
80			tb.onSwitch(tabID)
81		}
82	})
83
84	// Add to container
85	tb.box.Append(button.Widget())
86	tb.buttons[tab.ID] = button
87}
88
89// RemoveTab removes a tab button from the bar.
90func (tb *TabBar) RemoveTab(tabID entity.TabID) {
91	tb.mu.Lock()
92	defer tb.mu.Unlock()
93
94	button, exists := tb.buttons[tabID]
95	if !exists {
96		return
97	}
98
99	// Remove from container
100	tb.box.Remove(button.Widget())
101	button.Destroy()
102	delete(tb.buttons, tabID)
103}
104
105// SetActive updates which tab is shown as active.
106func (tb *TabBar) SetActive(tabID entity.TabID) {
107	tb.mu.Lock()
108	defer tb.mu.Unlock()
109
110	// Deactivate previous
111	if tb.activeTabID != "" && tb.activeTabID != tabID {
112		if prevButton, exists := tb.buttons[tb.activeTabID]; exists {
113			prevButton.SetActive(false)
114		}
115	}
116
117	// Activate new
118	if button, exists := tb.buttons[tabID]; exists {
119		button.SetActive(true)
120	}
121
122	tb.activeTabID = tabID
123}
124
125// UpdateTitle updates the title of a specific tab button.
126func (tb *TabBar) UpdateTitle(tabID entity.TabID, title string) {
127	tb.mu.RLock()
128	defer tb.mu.RUnlock()
129
130	if button, exists := tb.buttons[tabID]; exists {
131		button.SetTitle(title)
132	}
133}
134
135// SetOnSwitch sets the callback for tab switch events.
136func (tb *TabBar) SetOnSwitch(fn func(tabID entity.TabID)) {
137	tb.onSwitch = fn
138}
139
140// SetOnClose sets the callback for tab close events.
141func (tb *TabBar) SetOnClose(fn func(tabID entity.TabID)) {
142	tb.onClose = fn
143}
144
145// SetOnCreate sets the callback for new tab creation.
146func (tb *TabBar) SetOnCreate(fn func()) {
147	tb.onCreate = fn
148}
149
150// Count returns the number of tabs in the bar.
151func (tb *TabBar) Count() int {
152	tb.mu.RLock()
153	defer tb.mu.RUnlock()
154	return len(tb.buttons)
155}
156
157// ActiveTabID returns the currently active tab ID.
158func (tb *TabBar) ActiveTabID() entity.TabID {
159	tb.mu.RLock()
160	defer tb.mu.RUnlock()
161	return tb.activeTabID
162}
163
164// SetVisible explicitly shows or hides the tab bar.
165func (tb *TabBar) SetVisible(visible bool) {
166	if tb == nil || tb.box == nil {
167		return
168	}
169	tb.explicitlyVisible = visible
170	tb.applyVisibilityState()
171}
172
173// SetAutoHidden hides the tab bar visually while keeping the overlay widget
174// visible to GTK when the bar has not been explicitly hidden. It is used for
175// hide_tab_bar_when_single_tab; WebView viewport height stays stable because the
176// tab bar is mounted as a non-measured overlay above the content.
177func (tb *TabBar) SetAutoHidden(hidden bool) {
178	if tb == nil || tb.box == nil {
179		return
180	}
181
182	tb.autoHidden = hidden
183	tb.applyVisibilityState()
184}
185
186func (tb *TabBar) applyVisibilityState() {
187	if tb == nil || tb.box == nil {
188		return
189	}
190
191	interactive := tb.explicitlyVisible && !tb.autoHidden
192	tb.box.SetVisible(tb.explicitlyVisible)
193	if interactive {
194		tb.box.SetOpacity(1.0)
195	} else {
196		tb.box.SetOpacity(0.0)
197	}
198	tb.box.SetCanTarget(interactive)
199	tb.box.SetFocusable(interactive)
200}
201
202// Destroy cleans up all tab bar resources.
203func (tb *TabBar) Destroy() {
204	tb.mu.Lock()
205	defer tb.mu.Unlock()
206
207	for _, button := range tb.buttons {
208		button.Destroy()
209	}
210	tb.buttons = nil
211
212	if tb.box != nil {
213		tb.box.Unref()
214		tb.box = nil
215	}
216}
tab_bar.go RawHistoryFolder

tab_bar.go Raw History Folder
