mirror of
https://github.com/wailsapp/wails.git
synced 2025-05-02 19:50:15 +08:00
106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
/*
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* Copyright (C) 2019 The Winc Authors. All Rights Reserved.
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*/
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package winc
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import (
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"syscall"
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"unsafe"
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"github.com/wailsapp/wails/v2/internal/frontend/desktop/windows/winc/w32"
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)
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// TabView creates MultiPanel internally and manages tabs as panels.
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type TabView struct {
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ControlBase
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panels *MultiPanel
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onSelectedChange EventManager
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}
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func NewTabView(parent Controller) *TabView {
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tv := new(TabView)
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tv.InitControl("SysTabControl32", parent, 0,
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w32.WS_CHILD|w32.WS_VISIBLE|w32.WS_TABSTOP|w32.WS_CLIPSIBLINGS)
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RegMsgHandler(tv)
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tv.panels = NewMultiPanel(parent)
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tv.SetFont(DefaultFont)
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tv.SetSize(200, 24)
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return tv
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}
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func (tv *TabView) Panels() *MultiPanel {
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return tv.panels
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}
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func (tv *TabView) tcitemFromPage(panel *Panel) *w32.TCITEM {
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text := syscall.StringToUTF16(panel.Text())
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item := &w32.TCITEM{
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Mask: w32.TCIF_TEXT,
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PszText: &text[0],
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CchTextMax: int32(len(text)),
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}
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return item
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}
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func (tv *TabView) AddPanel(text string) *Panel {
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panel := NewPanel(tv.panels)
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panel.SetText(text)
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item := tv.tcitemFromPage(panel)
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index := tv.panels.Count()
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idx := int(w32.SendMessage(tv.hwnd, w32.TCM_INSERTITEM, uintptr(index), uintptr(unsafe.Pointer(item))))
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if idx == -1 {
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panic("SendMessage(TCM_INSERTITEM) failed")
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}
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tv.panels.AddPanel(panel)
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tv.SetCurrent(idx)
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return panel
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}
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func (tv *TabView) DeletePanel(index int) {
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w32.SendMessage(tv.hwnd, w32.TCM_DELETEITEM, uintptr(index), 0)
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tv.panels.DeletePanel(index)
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switch {
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case tv.panels.Count() > index:
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tv.SetCurrent(index)
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case tv.panels.Count() == 0:
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tv.SetCurrent(0)
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}
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}
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func (tv *TabView) Current() int {
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return tv.panels.Current()
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}
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func (tv *TabView) SetCurrent(index int) {
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if index < 0 || index >= tv.panels.Count() {
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panic("invalid index")
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}
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if ret := int(w32.SendMessage(tv.hwnd, w32.TCM_SETCURSEL, uintptr(index), 0)); ret == -1 {
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panic("SendMessage(TCM_SETCURSEL) failed")
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}
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tv.panels.SetCurrent(index)
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}
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func (tv *TabView) WndProc(msg uint32, wparam, lparam uintptr) uintptr {
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switch msg {
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case w32.WM_NOTIFY:
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nmhdr := (*w32.NMHDR)(unsafe.Pointer(lparam))
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switch int32(nmhdr.Code) {
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case w32.TCN_SELCHANGE:
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cur := int(w32.SendMessage(tv.hwnd, w32.TCM_GETCURSEL, 0, 0))
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tv.SetCurrent(cur)
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tv.onSelectedChange.Fire(NewEvent(tv, nil))
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}
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}
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return w32.DefWindowProc(tv.hwnd, msg, wparam, lparam)
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}
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