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sliceviewbase.go
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sliceviewbase.go
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// Copyright (c) 2018, The GoKi Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package giv
import (
"encoding/json"
"fmt"
"image"
"log"
"reflect"
"sort"
"github.com/chewxy/math32"
"github.com/goki/gi/gi"
"github.com/goki/gi/mat32"
"github.com/goki/gi/oswin"
"github.com/goki/gi/oswin/dnd"
"github.com/goki/gi/oswin/key"
"github.com/goki/gi/oswin/mimedata"
"github.com/goki/gi/oswin/mouse"
"github.com/goki/gi/units"
"github.com/goki/ki/ints"
"github.com/goki/ki/ki"
"github.com/goki/ki/kit"
"github.com/goki/pi/filecat"
)
////////////////////////////////////////////////////////////////////////////////////////
// SliceViewer
// SliceViewer is the interface used by SliceViewBase to support any abstractions
// needed for different types of slice views.
type SliceViewer interface {
// AsSliceViewBase returns the base for direct access to relevant fields etc
AsSliceViewBase() *SliceViewBase
// Config configures the view
Config()
// IsConfiged returns true if is fully configured for display
IsConfiged() bool
// SliceGrid returns the SliceGrid grid frame widget, which contains all the
// fields and values
SliceGrid() *gi.Frame
// ScrollBar returns the SliceGrid scrollbar
ScrollBar() *gi.ScrollBar
// RowWidgetNs returns number of widgets per row and offset for index label
RowWidgetNs() (nWidgPerRow, idxOff int)
// SliceSize returns the current size of the slice and sets SliceSize
UpdtSliceSize() int
// LayoutSliceGrid does the proper layout of slice grid depending on allocated size
// returns true if UpdateSliceGrid should be called after this
LayoutSliceGrid() bool
// UpdateSliceGrid updates grid display -- robust to any time calling
UpdateSliceGrid()
// StyleRow calls a custom style function on given row (and field)
StyleRow(svnp reflect.Value, widg gi.Node2D, idx, fidx int, vv ValueView)
// RowFirstWidget returns the first widget for given row (could be index or
// not) -- false if out of range
RowFirstWidget(row int) (*gi.WidgetBase, bool)
// RowGrabFocus grabs the focus for the first focusable widget in given row --
// returns that element or nil if not successful -- note: grid must have
// already rendered for focus to be grabbed!
RowGrabFocus(row int) *gi.WidgetBase
// SelectRowWidgets sets the selection state of given row of widgets
SelectRowWidgets(row int, sel bool)
// SliceNewAt inserts a new blank element at given index in the slice -- -1
// means the end
SliceNewAt(idx int)
// SliceDeleteAt deletes element at given index from slice
// if updt is true, then update the grid after
SliceDeleteAt(idx int, updt bool)
// MimeDataType returns the data type for mime clipboard (copy / paste) data
// e.g., filecat.DataJson
MimeDataType() string
// CopySelToMime copies selected rows to mime data
CopySelToMime() mimedata.Mimes
// PasteAssign assigns mime data (only the first one!) to this idx
PasteAssign(md mimedata.Mimes, idx int)
// PasteAtIdx inserts object(s) from mime data at (before) given slice index
PasteAtIdx(md mimedata.Mimes, idx int)
// ItemCtxtMenu pulls up the context menu for given slice index
ItemCtxtMenu(idx int)
}
////////////////////////////////////////////////////////////////////////////////////////
// SliceViewBase
// SliceViewBase is the base for SliceView and TableView and any other viewers
// of array-like data. It automatically computes the number of rows that fit
// within its allocated space, and manages the offset view window into the full
// list of items, and supports row selection, copy / paste, Drag-n-Drop, etc.
// Set to Inactive for select-only mode, which emits WidgetSig WidgetSelected
// signals when selection is updated.
type SliceViewBase struct {
gi.Frame
Slice interface{} `copy:"-" view:"-" json:"-" xml:"-" desc:"the slice that we are a view onto -- must be a pointer to that slice"`
SliceNPVal reflect.Value `copy:"-" view:"-" json:"-" xml:"-" desc:"non-ptr reflect.Value of the slice"`
SliceValView ValueView `copy:"-" view:"-" json:"-" xml:"-" desc:"ValueView for the slice itself, if this was created within value view framework -- otherwise nil"`
isArray bool `copy:"-" view:"-" json:"-" xml:"-" desc:"whether the slice is actually an array -- no modifications -- set by SetSlice"`
NoAdd bool `desc:"if true, user cannot add elements to the slice"`
NoDelete bool `desc:"if true, user cannot delete elements from the slice"`
ShowViewCtxtMenu bool `desc:"if the type we're viewing has its own CtxtMenu property defined, should we also still show the view's standard context menu?"`
Changed bool `desc:"has the slice been edited?"`
Values []ValueView `copy:"-" view:"-" json:"-" xml:"-" desc:"ValueView representations of the slice values"`
ShowIndex bool `xml:"index" desc:"whether to show index or not -- updated from 'index' property (bool)"`
InactKeyNav bool `xml:"inact-key-nav" desc:"support key navigation when inactive (default true) -- updated from 'intact-key-nav' property (bool) -- no focus really plausible in inactive case, so it uses a low-pri capture of up / down events"`
SelVal interface{} `copy:"-" view:"-" json:"-" xml:"-" desc:"current selection value -- initially select this value if set"`
SelectedIdx int `copy:"-" json:"-" xml:"-" desc:"index of currently-selected item, in Inactive mode only"`
SelectMode bool `copy:"-" desc:"editing-mode select rows mode"`
SelectedIdxs map[int]struct{} `copy:"-" desc:"list of currently-selected slice indexes"`
DraggedIdxs []int `copy:"-" desc:"list of currently-dragged indexes"`
SliceViewSig ki.Signal `copy:"-" json:"-" xml:"-" desc:"slice view interactive editing signals"`
ViewSig ki.Signal `copy:"-" json:"-" xml:"-" desc:"signal for valueview -- only one signal sent when a value has been set -- all related value views interconnect with each other to update when others update"`
ViewPath string `desc:"a record of parent View names that have led up to this view -- displayed as extra contextual information in view dialog windows"`
TmpSave ValueView `copy:"-" json:"-" xml:"-" desc:"value view that needs to have SaveTmp called on it whenever a change is made to one of the underlying values -- pass this down to any sub-views created from a parent"`
ToolbarSlice interface{} `copy:"-" view:"-" json:"-" xml:"-" desc:"the slice that we successfully set a toolbar for"`
SliceSize int `view:"inactive" copy:"-" json:"-" xml:"-" desc:"size of slice"`
DispRows int `view:"inactive" copy:"-" json:"-" xml:"-" desc:"actual number of rows displayed = min(VisRows, SliceSize)"`
StartIdx int `view:"inactive" copy:"-" json:"-" xml:"-" desc:"starting slice index of visible rows"`
RowHeight float32 `view:"inactive" copy:"-" json:"-" xml:"-" desc:"height of a single row"`
VisRows int `view:"inactive" copy:"-" json:"-" xml:"-" desc:"total number of rows visible in allocated display size"`
LayoutHeight float32 `copy:"-" view:"-" json:"-" xml:"-" desc:"the height of grid from last layout -- determines when update needed"`
RenderedRows int `copy:"-" view:"-" json:"-" xml:"-" desc:"the number of rows rendered -- determines update"`
InFocusGrab bool `copy:"-" view:"-" json:"-" xml:"-" desc:"guard for recursive focus grabbing"`
InFullRebuild bool `copy:"-" view:"-" json:"-" xml:"-" desc:"guard for recursive rebuild"`
CurIdx int `copy:"-" view:"-" json:"-" xml:"-" desc:"temp idx state for e.g., dnd"`
}
var KiT_SliceViewBase = kit.Types.AddType(&SliceViewBase{}, nil)
// AddNewSliceViewBase adds a new sliceview to given parent node, with given name.
func AddNewSliceViewBase(parent ki.Ki, name string) *SliceViewBase {
return parent.AddNewChild(KiT_SliceViewBase, name).(*SliceViewBase)
}
func (sv *SliceViewBase) Disconnect() {
sv.Frame.Disconnect()
sv.SliceViewSig.DisconnectAll()
sv.ViewSig.DisconnectAll()
}
func (sv *SliceViewBase) AsSliceViewBase() *SliceViewBase {
return sv
}
// Each SliceView must implement its own SetSlice, Config, etc pipeline.
// This one is for a basic SliceView
// the only interface call is UpdateSliceGrid()
// SetSlice sets the source slice that we are viewing -- rebuilds the children
// to represent this slice
func (sv *SliceViewBase) SetSlice(sl interface{}) {
if kit.IfaceIsNil(sl) {
sv.Slice = nil
return
}
if sv.Slice == sl && sv.IsConfiged() {
sv.Update()
return
}
updt := sv.UpdateStart()
sv.StartIdx = 0
sv.Slice = sl
sv.SliceNPVal = kit.NonPtrValue(reflect.ValueOf(sv.Slice))
sv.isArray = kit.NonPtrType(reflect.TypeOf(sl)).Kind() == reflect.Array
if !sv.IsInactive() {
sv.SelectedIdx = -1
}
sv.ResetSelectedIdxs()
sv.SelectMode = false
sv.SetFullReRender()
sv.ShowIndex = true
if sidxp, err := sv.PropTry("index"); err == nil {
sv.ShowIndex, _ = kit.ToBool(sidxp)
}
sv.InactKeyNav = true
if siknp, err := sv.PropTry("inact-key-nav"); err == nil {
sv.InactKeyNav, _ = kit.ToBool(siknp)
}
sv.Config()
sv.UpdateEnd(updt)
}
// Update is the high-level update display call -- robust to any changes
func (sv *SliceViewBase) Update() {
wupdt := sv.TopUpdateStart()
defer sv.TopUpdateEnd(wupdt)
updt := sv.UpdateStart()
sv.This().(SliceViewer).LayoutSliceGrid()
sv.This().(SliceViewer).UpdateSliceGrid()
sv.UpdateEnd(updt)
}
// SliceViewSignals are signals that sliceview can send, mostly for editing
// mode. Selection events are sent on WidgetSig WidgetSelected signals in
// both modes.
type SliceViewSignals int64
const (
// SliceViewDoubleClicked emitted during inactive mode when item
// double-clicked -- can be used for accepting dialog.
SliceViewDoubleClicked SliceViewSignals = iota
// todo: add more signals as needed
SliceViewSignalsN
)
//go:generate stringer -type=SliceViewSignals
// UpdateValues updates the widget display of slice values, assuming same slice config
func (sv *SliceViewBase) UpdateValues() {
updt := sv.UpdateStart()
for _, vv := range sv.Values {
vv.UpdateWidget()
}
sv.UpdateEnd(updt)
}
// Config configures a standard setup of the overall Frame
func (sv *SliceViewBase) Config() {
sv.Lay = gi.LayoutVert
sv.SetProp("spacing", gi.StdDialogVSpaceUnits)
config := kit.TypeAndNameList{}
config.Add(gi.KiT_ToolBar, "toolbar")
config.Add(gi.KiT_Layout, "grid-lay")
mods, updt := sv.ConfigChildren(config, ki.UniqueNames)
gl := sv.GridLayout()
gl.Lay = gi.LayoutHoriz
gl.SetStretchMax() // for this to work, ALL layers above need it too
gconfig := kit.TypeAndNameList{}
gconfig.Add(gi.KiT_Frame, "grid")
gconfig.Add(gi.KiT_ScrollBar, "scrollbar")
gl.ConfigChildren(gconfig, ki.UniqueNames) // covered by above
sv.ConfigSliceGrid()
sv.ConfigToolbar()
if mods {
sv.SetFullReRender()
sv.UpdateEnd(updt)
}
}
// IsConfiged returns true if the widget is fully configured
func (sv *SliceViewBase) IsConfiged() bool {
if len(sv.Kids) == 0 {
return false
}
return true
}
// GridLayout returns the Layout containing the Grid and the scrollbar
func (sv *SliceViewBase) GridLayout() *gi.Layout {
return sv.ChildByName("grid-lay", 0).(*gi.Layout)
}
// SliceGrid returns the SliceGrid grid frame widget, which contains all the
// fields and values
func (sv *SliceViewBase) SliceGrid() *gi.Frame {
return sv.GridLayout().ChildByName("grid", 0).(*gi.Frame)
}
// ScrollBar returns the SliceGrid scrollbar
func (sv *SliceViewBase) ScrollBar() *gi.ScrollBar {
return sv.GridLayout().ChildByName("scrollbar", 1).(*gi.ScrollBar)
}
// ToolBar returns the toolbar widget
func (sv *SliceViewBase) ToolBar() *gi.ToolBar {
tbi := sv.ChildByName("toolbar", 1)
if tbi == nil {
return nil
}
return tbi.(*gi.ToolBar)
}
// RowWidgetNs returns number of widgets per row and offset for index label
func (sv *SliceViewBase) RowWidgetNs() (nWidgPerRow, idxOff int) {
nWidgPerRow = 2
if !sv.IsInactive() && !sv.isArray {
if !sv.NoAdd {
nWidgPerRow += 1
}
if !sv.NoDelete {
nWidgPerRow += 1
}
}
idxOff = 1
if !sv.ShowIndex {
nWidgPerRow -= 1
idxOff = 0
}
return
}
// UpdtSliceSize updates and returns the size of the slice and sets SliceSize
func (sv *SliceViewBase) UpdtSliceSize() int {
sz := sv.SliceNPVal.Len()
sv.SliceSize = sz
return sz
}
// ConfigSliceGrid configures the SliceGrid for the current slice
// it is only called once at start, under overall Config
func (sv *SliceViewBase) ConfigSliceGrid() {
sg := sv.This().(SliceViewer).SliceGrid()
updt := sg.UpdateStart()
defer sg.UpdateEnd(updt)
nWidgPerRow, idxOff := sv.RowWidgetNs()
sg.Lay = gi.LayoutGrid
sg.Stripes = gi.RowStripes
sg.SetProp("columns", nWidgPerRow)
// setting a pref here is key for giving it a scrollbar in larger context
sg.SetMinPrefHeight(units.NewEm(1.5))
sg.SetMinPrefWidth(units.NewEm(10))
sg.SetStretchMax() // for this to work, ALL layers above need it too
if kit.IfaceIsNil(sv.Slice) {
return
}
sz := sv.This().(SliceViewer).UpdtSliceSize()
if sz == 0 {
return
}
sg.DeleteChildren(ki.DestroyKids)
sg.Kids = make(ki.Slice, nWidgPerRow)
// at this point, we make one dummy row to get size of widgets
val := kit.OnePtrUnderlyingValue(sv.SliceNPVal.Index(0)) // deal with pointer lists
vv := ToValueView(val.Interface(), "")
if vv == nil { // shouldn't happen
return
}
vv.SetSliceValue(val, sv.Slice, 0, sv.TmpSave, sv.ViewPath)
vtyp := vv.WidgetType()
itxt := fmt.Sprintf("%05d", 0)
labnm := fmt.Sprintf("index-%v", itxt)
valnm := fmt.Sprintf("value-%v", itxt)
if sv.ShowIndex {
idxlab := &gi.Label{}
sg.SetChild(idxlab, 0, labnm)
idxlab.Text = itxt
}
widg := ki.NewOfType(vtyp).(gi.Node2D)
sg.SetChild(widg, idxOff, valnm)
vv.ConfigWidget(widg)
if !sv.IsInactive() && !sv.isArray {
cidx := idxOff
if !sv.NoAdd {
cidx++
addnm := fmt.Sprintf("add-%v", itxt)
addact := gi.Action{}
sg.SetChild(&addact, cidx, addnm)
addact.SetIcon("plus")
}
if !sv.NoDelete {
cidx++
delnm := fmt.Sprintf("del-%v", itxt)
delact := gi.Action{}
sg.SetChild(&delact, cidx, delnm)
delact.SetIcon("minus")
}
}
sv.ConfigScroll()
}
// ConfigScroll configures the scrollbar
func (sv *SliceViewBase) ConfigScroll() {
sb := sv.This().(SliceViewer).ScrollBar()
sb.Dim = mat32.Y
sb.Defaults()
sb.Tracking = true
if sv.Sty.Layout.ScrollBarWidth.Dots == 0 {
sb.SetFixedWidth(units.NewPx(16))
} else {
sb.SetFixedWidth(sv.Sty.Layout.ScrollBarWidth)
}
sb.SetStretchMaxHeight()
sb.Min = 0
sb.Step = 1
sv.UpdateScroll()
sb.SliderSig.Connect(sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
if sig != int64(gi.SliderValueChanged) {
return
}
svv := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
wupdt := sv.TopUpdateStart()
svv.This().(SliceViewer).UpdateSliceGrid()
svv.Viewport.ReRender2DNode(svv.This().(gi.Node2D))
svv.TopUpdateEnd(wupdt)
})
}
// UpdateScroll updates grid scrollbar based on display
func (sv *SliceViewBase) UpdateScroll() {
sb := sv.This().(SliceViewer).ScrollBar()
updt := sb.UpdateStart()
sb.Max = float32(sv.SliceSize) + 0.01 // bit of extra to ensure last line always shows up
if sv.DispRows > 0 {
sb.PageStep = float32(sv.DispRows) * sb.Step
sb.ThumbVal = float32(sv.DispRows)
} else {
sb.PageStep = 10 * sb.Step
sb.ThumbVal = 10
}
sb.TrackThr = sb.Step
sb.SetValue(float32(sv.StartIdx)) // essential for updating pos from value
if sv.DispRows == sv.SliceSize {
sb.Off = true
} else {
sb.Off = false
}
sb.UpdateEnd(updt)
}
func (sv *SliceViewBase) AvailHeight() float32 {
sg := sv.This().(SliceViewer).SliceGrid()
sgHt := sg.LayData.AllocSize.Y
if sgHt == 0 {
return 0
}
sgHt -= sg.ExtraSize.Y + sg.Sty.BoxSpace()*2
return sgHt
}
// LayoutSliceGrid does the proper layout of slice grid depending on allocated size
// returns true if UpdateSliceGrid should be called after this
func (sv *SliceViewBase) LayoutSliceGrid() bool {
sg := sv.This().(SliceViewer).SliceGrid()
if kit.IfaceIsNil(sv.Slice) {
sg.DeleteChildren(ki.DestroyKids)
return false
}
sz := sv.This().(SliceViewer).UpdtSliceSize()
if sz == 0 {
sg.DeleteChildren(ki.DestroyKids)
return false
}
sgHt := sv.AvailHeight()
sv.LayoutHeight = sgHt
if sgHt == 0 {
return false
}
nWidgPerRow, _ := sv.RowWidgetNs()
sv.RowHeight = sg.GridData[gi.Row][0].AllocSize + sg.Spacing.Dots
sv.VisRows = int(math32.Floor(sgHt / sv.RowHeight))
sv.DispRows = ints.MinInt(sv.SliceSize, sv.VisRows)
nWidg := nWidgPerRow * sv.DispRows
updt := sg.UpdateStart()
defer sg.UpdateEnd(updt)
if sv.Values == nil || sg.NumChildren() != nWidg {
sg.DeleteChildren(ki.DestroyKids)
sv.Values = make([]ValueView, sv.DispRows)
sg.Kids = make(ki.Slice, nWidg)
}
sv.ConfigScroll()
return true
}
func (sv *SliceViewBase) SliceGridNeedsLayout() bool {
sgHt := sv.AvailHeight()
if sgHt != sv.LayoutHeight {
return true
}
return sv.RenderedRows != sv.DispRows
}
// UpdateSliceGrid updates grid display -- robust to any time calling
func (sv *SliceViewBase) UpdateSliceGrid() {
if kit.IfaceIsNil(sv.Slice) {
return
}
sz := sv.This().(SliceViewer).UpdtSliceSize()
if sz == 0 {
return
}
sg := sv.This().(SliceViewer).SliceGrid()
sv.DispRows = ints.MinInt(sv.SliceSize, sv.VisRows)
nWidgPerRow, idxOff := sv.RowWidgetNs()
nWidg := nWidgPerRow * sv.DispRows
wupdt := sv.TopUpdateStart()
defer sv.TopUpdateEnd(wupdt)
updt := sg.UpdateStart()
defer sg.UpdateEnd(updt)
if sv.Values == nil || sg.NumChildren() != nWidg { // shouldn't happen..
sv.LayoutSliceGrid()
nWidg = nWidgPerRow * sv.DispRows
}
if sz > sv.DispRows {
sb := sv.This().(SliceViewer).ScrollBar()
sv.StartIdx = int(sb.Value)
lastSt := sz - sv.DispRows
sv.StartIdx = ints.MinInt(lastSt, sv.StartIdx)
sv.StartIdx = ints.MaxInt(0, sv.StartIdx)
} else {
sv.StartIdx = 0
}
for i := 0; i < sv.DispRows; i++ {
ridx := i * nWidgPerRow
si := sv.StartIdx + i // slice idx
issel := sv.IdxIsSelected(si)
val := kit.OnePtrUnderlyingValue(sv.SliceNPVal.Index(si)) // deal with pointer lists
var vv ValueView
if sv.Values[i] == nil {
vv = ToValueView(val.Interface(), "")
sv.Values[i] = vv
} else {
vv = sv.Values[i]
}
vv.SetSliceValue(val, sv.Slice, si, sv.TmpSave, sv.ViewPath)
vtyp := vv.WidgetType()
itxt := fmt.Sprintf("%05d", i)
sitxt := fmt.Sprintf("%05d", si)
labnm := fmt.Sprintf("index-%v", itxt)
valnm := fmt.Sprintf("value-%v", itxt)
if sv.ShowIndex {
var idxlab *gi.Label
if sg.Kids[ridx] != nil {
idxlab = sg.Kids[ridx].(*gi.Label)
} else {
idxlab = &gi.Label{}
sg.SetChild(idxlab, ridx, labnm)
idxlab.SetProp("slv-row", i) // all sigs deal with disp rows
idxlab.Selectable = true
idxlab.Redrawable = true
idxlab.Sty.Template = "giv.SliceViewBase.IndexLabel"
idxlab.WidgetSig.ConnectOnly(sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
if sig == int64(gi.WidgetSelected) {
wbb := send.(gi.Node2D).AsWidget()
row := wbb.Prop("slv-row").(int)
svv := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
svv.UpdateSelectRow(row, wbb.IsSelected())
}
})
}
idxlab.CurBgColor = gi.Prefs.Colors.Background
idxlab.SetText(sitxt)
idxlab.SetSelectedState(issel)
}
var widg gi.Node2D
if sg.Kids[ridx+idxOff] != nil {
widg = sg.Kids[ridx+idxOff].(gi.Node2D)
vv.UpdateWidget()
if sv.IsInactive() {
widg.AsNode2D().SetInactive()
}
widg.AsNode2D().SetSelectedState(issel)
} else {
widg = ki.NewOfType(vtyp).(gi.Node2D)
sg.SetChild(widg, ridx+idxOff, valnm)
vv.ConfigWidget(widg)
wb := widg.AsWidget()
// wb.Sty.Template = "giv.SliceViewBase.ItemWidget." + vtyp.Name()
if sv.IsInactive() {
widg.AsNode2D().SetInactive()
if wb != nil {
wb.SetProp("slv-row", i)
wb.ClearSelected()
wb.WidgetSig.ConnectOnly(sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
if sig == int64(gi.WidgetSelected) || sig == int64(gi.WidgetFocused) {
wbb := send.(gi.Node2D).AsWidget()
row := wbb.Prop("slv-row").(int)
svv := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
svv.UpdateSelectRow(row, wbb.IsSelected())
}
})
}
} else {
vvb := vv.AsValueViewBase()
vvb.ViewSig.ConnectOnly(sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
svv, _ := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
svv.SetChanged()
})
if !sv.isArray {
cidx := ridx + idxOff
if !sv.NoAdd {
cidx++
addnm := fmt.Sprintf("add-%v", itxt)
addact := gi.Action{}
sg.SetChild(&addact, cidx, addnm)
addact.SetIcon("plus")
addact.Tooltip = "insert a new element at this index"
addact.Data = i
addact.Sty.Template = "giv.SliceViewBase.AddAction"
addact.ActionSig.ConnectOnly(sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
act := send.(*gi.Action)
svv := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
svv.SliceNewAtRow(act.Data.(int) + 1)
})
}
if !sv.NoDelete {
cidx++
delnm := fmt.Sprintf("del-%v", itxt)
delact := gi.Action{}
sg.SetChild(&delact, cidx, delnm)
delact.SetIcon("minus")
delact.Tooltip = "delete this element"
delact.Data = i
delact.Sty.Template = "giv.SliceViewBase.DelAction"
delact.ActionSig.ConnectOnly(sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
act := send.(*gi.Action)
svv := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
svv.SliceDeleteAtRow(act.Data.(int), true)
})
}
}
}
}
sv.This().(SliceViewer).StyleRow(sv.SliceNPVal, widg, si, 0, vv)
}
if sv.SelVal != nil {
sv.SelectedIdx, _ = SliceIdxByValue(sv.Slice, sv.SelVal)
}
if sv.IsInactive() && sv.SelectedIdx >= 0 {
sv.SelectIdxWidgets(sv.SelectedIdx, true)
}
sv.UpdateScroll()
}
// SetChanged sets the Changed flag and emits the ViewSig signal for the
// SliceViewBase, indicating that some kind of edit / change has taken place to
// the table data. It isn't really practical to record all the different
// types of changes, so this is just generic.
func (sv *SliceViewBase) SetChanged() {
sv.Changed = true
sv.ViewSig.Emit(sv.This(), 0, nil)
sv.ToolBar().UpdateActions() // nil safe
}
// SliceNewAtRow inserts a new blank element at given display row
func (sv *SliceViewBase) SliceNewAtRow(row int) {
sv.This().(SliceViewer).SliceNewAt(sv.StartIdx + row)
}
// SliceNewAt inserts a new blank element at given index in the slice -- -1
// means the end
func (sv *SliceViewBase) SliceNewAt(idx int) {
if sv.isArray {
return
}
updt := sv.UpdateStart()
defer sv.UpdateEnd(updt)
sltyp := kit.SliceElType(sv.Slice) // has pointer if it is there
iski := ki.IsKi(sltyp)
slptr := sltyp.Kind() == reflect.Ptr
svl := reflect.ValueOf(sv.Slice)
sz := sv.SliceSize
svnp := sv.SliceNPVal
if iski && sv.SliceValView != nil {
vvb := sv.SliceValView.AsValueViewBase()
if vvb.Owner != nil {
if ownki, ok := vvb.Owner.(ki.Ki); ok {
gi.NewKiDialog(sv.Viewport, ownki.BaseIface(),
gi.DlgOpts{Title: "Slice New", Prompt: "Number and Type of Items to Insert:"},
sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
if sig == int64(gi.DialogAccepted) {
// svv, _ := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
dlg, _ := send.(*gi.Dialog)
n, typ := gi.NewKiDialogValues(dlg)
updt := ownki.UpdateStart()
for i := 0; i < n; i++ {
nm := fmt.Sprintf("New%v%v", typ.Name(), idx+1+i)
ownki.InsertNewChild(typ, idx+1+i, nm)
}
sv.SetChanged()
ownki.UpdateEnd(updt)
}
})
}
}
} else {
nval := reflect.New(kit.NonPtrType(sltyp)) // make the concrete el
if !slptr {
nval = nval.Elem() // use concrete value
}
svnp = reflect.Append(svnp, nval)
if idx >= 0 && idx < sz {
reflect.Copy(svnp.Slice(idx+1, sz+1), svnp.Slice(idx, sz))
svnp.Index(idx).Set(nval)
}
svl.Elem().Set(svnp)
}
sv.SliceNPVal = kit.NonPtrValue(reflect.ValueOf(sv.Slice)) // need to update after changes
if sv.TmpSave != nil {
sv.TmpSave.SaveTmp()
}
sv.SetChanged()
sv.ScrollBar().SetFullReRender()
sv.This().(SliceViewer).LayoutSliceGrid()
sv.This().(SliceViewer).UpdateSliceGrid()
sv.ViewSig.Emit(sv.This(), 0, nil)
}
// SliceDeleteAtRow deletes element at given display row
// if updt is true, then update the grid after
func (sv *SliceViewBase) SliceDeleteAtRow(row int, updt bool) {
sv.This().(SliceViewer).SliceDeleteAt(sv.StartIdx+row, updt)
}
// SliceDeleteAt deletes element at given index from slice
// if updt is true, then update the grid after
func (sv *SliceViewBase) SliceDeleteAt(idx int, doupdt bool) {
if sv.isArray {
return
}
updt := sv.UpdateStart()
defer sv.UpdateEnd(updt)
kit.SliceDeleteAt(sv.Slice, idx)
if sv.TmpSave != nil {
sv.TmpSave.SaveTmp()
}
sv.SetChanged()
if doupdt {
sv.ScrollBar().SetFullReRender()
sv.This().(SliceViewer).LayoutSliceGrid()
sv.This().(SliceViewer).UpdateSliceGrid()
}
sv.ViewSig.Emit(sv.This(), 0, nil)
}
// ConfigToolbar configures the toolbar actions
func (sv *SliceViewBase) ConfigToolbar() {
if kit.IfaceIsNil(sv.Slice) || sv.IsInactive() {
return
}
if sv.ToolbarSlice == sv.Slice {
return
}
tb := sv.ToolBar()
ndef := 2 // number of default actions
if sv.isArray || sv.IsInactive() || sv.NoAdd {
ndef = 1
}
if len(*tb.Children()) < ndef {
tb.SetStretchMaxWidth()
tb.AddAction(gi.ActOpts{Label: "UpdtView", Icon: "update", Tooltip: "update the view to reflect current state of slice"},
sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
svv := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
svv.This().(SliceViewer).UpdateSliceGrid()
})
if ndef > 1 {
tb.AddAction(gi.ActOpts{Label: "Add", Icon: "plus", Tooltip: "add a new element to the slice"},
sv.This(), func(recv, send ki.Ki, sig int64, data interface{}) {
svv := recv.Embed(KiT_SliceViewBase).(*SliceViewBase)
svv.This().(SliceViewer).SliceNewAt(-1)
})
}
}
sz := len(*tb.Children())
if sz > ndef {
for i := sz - 1; i >= ndef; i-- {
tb.DeleteChildAtIndex(i, ki.DestroyKids)
}
}
if HasToolBarView(sv.Slice) {
ToolBarView(sv.Slice, sv.Viewport, tb)
tb.SetFullReRender()
}
sv.ToolbarSlice = sv.Slice
}
func (sv *SliceViewBase) Style2D() {
if !sv.This().(SliceViewer).IsConfiged() {
return
}
if sv.Viewport != nil && sv.Viewport.IsDoingFullRender() {
if sv.This().(SliceViewer).LayoutSliceGrid() {
sv.This().(SliceViewer).UpdateSliceGrid()
}
}
if sv.IsInactive() {
sv.SetCanFocus()
}
sg := sv.This().(SliceViewer).SliceGrid()
sg.StartFocus() // need to call this when window is actually active
sv.Frame.Style2D()
}
func (sv *SliceViewBase) Render2D() {
sv.ToolBar().UpdateActions()
if win := sv.ParentWindow(); win != nil {
if !win.IsResizing() {
win.MainMenuUpdateActives()
}
}
if !sv.This().(SliceViewer).IsConfiged() {
return
}
if !sv.SliceGridNeedsLayout() && sv.FullReRenderIfNeeded() {
return
}
if sv.PushBounds() {
if !sv.InFullRebuild && sv.SliceGridNeedsLayout() {
// note: we are outside of slice grid and thus cannot do proper layout during Layout2D
// as we don't yet know the size of grid -- so we catch it here at next step and just
// rebuild as needed.
sv.RenderedRows = sv.DispRows
sv.This().(SliceViewer).LayoutSliceGrid()
// sv.This().(SliceViewer).UpdateSliceGrid() // not updating
sv.InFullRebuild = true
sv.ReRender2DTree()
sv.InFullRebuild = false
if sv.SelectedIdx > -1 {
sv.ScrollToIdx(sv.SelectedIdx)
}
sv.PopBounds()
return
}
sv.FrameStdRender()
sv.This().(gi.Node2D).ConnectEvents2D()
sv.RenderScrolls()
sv.Render2DChildren()
sv.PopBounds()
} else {
sv.DisconnectAllEvents(gi.AllPris)
}
}
func (sv *SliceViewBase) ConnectEvents2D() {
sv.SliceViewBaseEvents()
}
func (sv *SliceViewBase) HasFocus2D() bool {
if !sv.ContainsFocus() {
return false
}
if sv.IsInactive() {
return sv.InactKeyNav
}
return true
}
//////////////////////////////////////////////////////////////////////////////
// Row access methods
// NOTE: row = physical GUI display row, idx = slice index -- not the same!
// SliceVal returns value interface at given slice index
func (sv *SliceViewBase) SliceVal(idx int) interface{} {
if idx < 0 || idx >= sv.SliceSize {
fmt.Printf("giv.SliceViewBase: slice index out of range: %v\n", idx)
return nil
}
val := kit.OnePtrUnderlyingValue(sv.SliceNPVal.Index(idx)) // deal with pointer lists
vali := val.Interface()
return vali
}
// IsRowInBounds returns true if disp row is in bounds
func (sv *SliceViewBase) IsRowInBounds(row int) bool {
return row >= 0 && row < sv.DispRows
}
// IsIdxVisible returns true if slice index is currently visible
func (sv *SliceViewBase) IsIdxVisible(idx int) bool {
return sv.IsRowInBounds(idx - sv.StartIdx)
}
// RowFirstWidget returns the first widget for given row (could be index or
// not) -- false if out of range
func (sv *SliceViewBase) RowFirstWidget(row int) (*gi.WidgetBase, bool) {
if !sv.ShowIndex {
return nil, false
}
if !sv.IsRowInBounds(row) {
return nil, false
}
nWidgPerRow, _ := sv.This().(SliceViewer).RowWidgetNs()
sg := sv.This().(SliceViewer).SliceGrid()
widg := sg.Kids[row*nWidgPerRow].(gi.Node2D).AsWidget()
return widg, true
}
// RowGrabFocus grabs the focus for the first focusable widget in given row --
// returns that element or nil if not successful -- note: grid must have
// already rendered for focus to be grabbed!
func (sv *SliceViewBase) RowGrabFocus(row int) *gi.WidgetBase {
if !sv.IsRowInBounds(row) || sv.InFocusGrab { // range check
return nil
}
nWidgPerRow, idxOff := sv.This().(SliceViewer).RowWidgetNs()
ridx := nWidgPerRow * row
sg := sv.This().(SliceViewer).SliceGrid()
widg := sg.Child(ridx + idxOff).(gi.Node2D).AsWidget()
if widg.HasFocus() {
return widg
}
sv.InFocusGrab = true
widg.GrabFocus()
sv.InFocusGrab = false
return widg
}
// IdxGrabFocus grabs the focus for the first focusable widget in given idx --
// returns that element or nil if not successful
func (sv *SliceViewBase) IdxGrabFocus(idx int) *gi.WidgetBase {
sv.ScrollToIdx(idx)
return sv.This().(SliceViewer).RowGrabFocus(idx - sv.StartIdx)
}
// IdxPos returns center of window position of index label for idx (ContextMenuPos)
func (sv *SliceViewBase) IdxPos(idx int) image.Point {
row := idx - sv.StartIdx
if row < 0 {
row = 0
}
if row > sv.DispRows-1 {
row = sv.DispRows - 1
}
var pos image.Point
widg, ok := sv.This().(SliceViewer).RowFirstWidget(row)
if ok {
pos = widg.ContextMenuPos()
}
return pos
}
// RowFromPos returns the row that contains given vertical position, false if not found
func (sv *SliceViewBase) RowFromPos(posY int) (int, bool) {
// todo: could optimize search to approx loc, and search up / down from there
for rw := 0; rw < sv.DispRows; rw++ {
widg, ok := sv.This().(SliceViewer).RowFirstWidget(rw)
if ok {
if widg.WinBBox.Min.Y < posY && posY < widg.WinBBox.Max.Y {
return rw, true
}
}
}
return -1, false
}
// IdxFromPos returns the idx that contains given vertical position, false if not found
func (sv *SliceViewBase) IdxFromPos(posY int) (int, bool) {
row, ok := sv.RowFromPos(posY)
if !ok {
return -1, false
}
return row + sv.StartIdx, true
}
// ScrollToIdx ensures that given slice idx is visible by scrolling display as needed