Commits
Diff
diff --git a/element/main.go b/element/main.go
index baf4b94..1c877d4 100644
--- a/element/main.go
+++ b/element/main.go
@@ -17,14 +17,13 @@ type Node struct {
- TagName string
- InnerText string
- InnerHTML string
- OuterHTML string
- Parent *Node `json:"-"`
- Children []*Node
- Style map[string]string
- Id string
- ClassList ClassList
- Href string
- Src string
- Title string
- Attribute map[string]string
- // !ISSUE: I don't like the scrollx/y
+ TagName string
+ InnerText string
+ InnerHTML string
+ OuterHTML string
+ Parent *Node `json:"-"`
+ Children []*Node
+ Style map[string]string
+ Id string
+ ClassList ClassList
+ Href string
+ Src string
+ Title string
+ Attribute map[string]string
@@ -35 +33,0 @@ type Node struct {
- ScrollHeight int
@@ -64,6 +62,5 @@ type State struct {
- Margin MarginPadding
- Padding MarginPadding
- Cursor string
- Crop Crop
- Hidden bool
- ScrollHeight int
+ Margin MarginPadding
+ Padding MarginPadding
+ Cursor string
+ Crop Crop
+ Hidden bool
package element
import (
"fmt"
"gui/canvas"
"gui/selector"
ic "image/color"
"math"
"strconv"
"strings"
"sync"
"golang.org/x/image/font"
)
type Node struct {
TagName string
InnerText string
InnerHTML string
OuterHTML string
Parent *Node `json:"-"`
Children []*Node
Style map[string]string
Id string
ClassList ClassList
Href string
Src string
Title string
Attribute map[string]string
// !ISSUE: I don't like the scrollx/y
ScrollX int
ScrollY int
ScrollLeft int
ScrollTop int
ScrollHeight int
Context *canvas.Canvas
PseudoElements map[string]map[string]string
Value string
OnClick func(Event) `json:"-"`
OnContextMenu func(Event) `json:"-"`
OnMouseDown func(Event) `json:"-"`
OnMouseUp func(Event) `json:"-"`
OnMouseEnter func(Event) `json:"-"`
OnMouseLeave func(Event) `json:"-"`
OnMouseOver func(Event) `json:"-"`
OnMouseMove func(Event) `json:"-"`
OnScroll func(Event) `json:"-"`
Properties Properties
}
type State struct {
// Id string
X float32
Y float32
Z float32
Width float32
Height float32
Border Border
Textures []string
EM float32
Background ic.RGBA
// Color ic.RGBA
Margin MarginPadding
Padding MarginPadding
Cursor string
Crop Crop
Hidden bool
ScrollHeight int
}
type Crop struct {
X int
Y int
Width int
Height int
}
// !FLAG: Plan to get rid of this
type Properties struct {
Id string
EventListeners map[string][]func(Event) `json:"-"`
Events []string
Focusable bool
Focused bool
Editable bool
Hover bool
Selected []float32
}
type ClassList struct {
Classes []string
Value string
}
type MarginPadding struct {
Top float32
Left float32
Right float32
Bottom float32
}
func (c *ClassList) Add(class string) {
c.Classes = append(c.Classes, class)
c.Value = strings.Join(c.Classes, " ")
}
func (c *ClassList) Remove(class string) {
for i, v := range c.Classes {
if v == class {
c.Classes = append(c.Classes[:i], c.Classes[i+1:]...)
break
}
}
c.Value = strings.Join(c.Classes, " ")
}
type Border struct {
Top BorderSide
Right BorderSide
Bottom BorderSide
Left BorderSide
Radius BorderRadius
}
type BorderSide struct {
Width float32
Style string
Color ic.RGBA
}
type BorderRadius struct {
TopLeft float32
TopRight float32
BottomLeft float32
BottomRight float32
}
type Text struct {
Font *font.Face
Color ic.RGBA
Text string
Underlined bool
Overlined bool
LineThrough bool
DecorationColor ic.RGBA
DecorationThickness int
Align string
Indent int // very low priority
LetterSpacing int
LineHeight int
WordSpacing int
WhiteSpace string
Shadows []Shadow // need
Width int
WordBreak string
EM int
X int
LoadedFont string
Last bool
}
type Shadow struct {
X int
Y int
Blur int
Color ic.RGBA
}
func (n *Node) GetAttribute(name string) string {
return n.Attribute[name]
}
func (n *Node) SetAttribute(key, value string) {
n.Attribute[key] = value
}
func (n *Node) CreateElement(name string) Node {
return Node{
TagName: name,
InnerText: "",
OuterHTML: "",
InnerHTML: "",
Children: []*Node{},
Style: make(map[string]string),
Id: "",
ClassList: ClassList{
Classes: []string{},
Value: "",
},
Href: "",
Src: "",
Title: "",
Attribute: make(map[string]string),
Value: "",
Properties: Properties{
Id: "",
EventListeners: make(map[string][]func(Event)),
Focusable: false,
Focused: false,
Editable: false,
Hover: false,
Selected: []float32{},
},
}
}
func (n *Node) QuerySelectorAll(selectString string) *[]*Node {
results := []*Node{}
if TestSelector(selectString, n) {
results = append(results, n)
}
for i := range n.Children {
el := n.Children[i]
cr := el.QuerySelectorAll(selectString)
if len(*cr) > 0 {
results = append(results, *cr...)
}
}
return &results
}
func (n *Node) QuerySelector(selectString string) *Node {
if TestSelector(selectString, n) {
return n
}
for i := range n.Children {
el := n.Children[i]
cr := el.QuerySelector(selectString)
if cr.Properties.Id != "" {
return cr
}
}
return &Node{}
}
func TestSelector(selectString string, n *Node) bool {
parts := strings.Split(selectString, ">")
selectors := []string{}
if n.Properties.Focusable && n.Properties.Focused {
selectors = append(selectors, ":focus")
}
for _, class := range n.ClassList.Classes {
selectors = append(selectors, "."+class)
}
if n.Id != "" {
selectors = append(selectors, "#"+n.Id)
}
selectors = append(selectors, n.TagName)
part := selector.SplitSelector(strings.TrimSpace(parts[len(parts)-1]))
// fmt.Println(part)
has := selector.Contains(part, selectors)
if len(parts) == 1 || !has {
return has
}
return TestSelector(strings.Join(parts[:len(parts)-1], ">"), n.Parent)
}
var (
idCounter int64
mu sync.Mutex
)
func generateUniqueId(tagName string) string {
mu.Lock()
defer mu.Unlock()
if idCounter == math.MaxInt64 {
idCounter = 0
}
idCounter++
return tagName + strconv.FormatInt(idCounter, 10)
}
func (n *Node) AppendChild(c *Node) {
c.Parent = n
c.Properties.Id = generateUniqueId(c.TagName)
n.Children = append(n.Children, c)
}
func (n *Node) InsertAfter(c, tgt *Node) {
c.Parent = n
c.Properties.Id = generateUniqueId(c.TagName)
nodeIndex := -1
for i, v := range n.Children {
if v.Properties.Id == tgt.Properties.Id {
nodeIndex = i
break
}
}
if nodeIndex > -1 {
n.Children = append(n.Children[:nodeIndex+1], append([]*Node{c}, n.Children[nodeIndex+1:]...)...)
} else {
n.AppendChild(c)
}
}
func (n *Node) InsertBefore(c, tgt *Node) {
c.Parent = n
// Set Id
c.Properties.Id = generateUniqueId(c.TagName)
nodeIndex := -1
for i, v := range n.Children {
if v.Properties.Id == tgt.Properties.Id {
nodeIndex = i
break
}
}
if nodeIndex > 0 {
n.Children = append(n.Children[:nodeIndex], append([]*Node{c}, n.Children[nodeIndex:]...)...)
// n.Children = append(n.Children, Node{}) // Add a zero value to expand the slice
// copy(n.Children[nodeIndex+1:], n.Children[nodeIndex:])
// n.Children[nodeIndex] = c
} else {
n.AppendChild(c)
}
}
func (n *Node) Remove() {
nodeIndex := -1
for i, v := range n.Parent.Children {
if v.Properties.Id == n.Properties.Id {
nodeIndex = i
break
}
}
if nodeIndex > 0 {
n.Parent.Children = append(n.Parent.Children[:nodeIndex], n.Parent.Children[nodeIndex+1:]...)
}
}
func (n *Node) Focus() {
if n.Properties.Focusable {
n.Properties.Focused = true
n.ClassList.Add(":focus")
}
}
func (n *Node) Blur() {
if n.Properties.Focusable {
n.Properties.Focused = false
n.ClassList.Remove(":focus")
}
}
func (n *Node) GetContext(width, height int) *canvas.Canvas {
n.Style["width"] = strconv.Itoa(width) + "px"
n.Style["height"] = strconv.Itoa(height) + "px"
ctx := canvas.NewCanvas(width, height)
n.Context = ctx
return ctx
}
func (n *Node) ScrollTo(x, y int) {
n.ScrollTop = y
n.ScrollLeft = x
}
type Event struct {
X int
Y int
KeyCode int
Key string
CtrlKey bool
MetaKey bool
ShiftKey bool
AltKey bool
Click bool
ContextMenu bool
MouseDown bool
MouseUp bool
MouseEnter bool
MouseLeave bool
MouseOver bool
KeyUp bool
KeyDown bool
KeyPress bool
Input bool
Target *Node
Name string
Data interface{}
}
type EventList struct {
Event Event
List []string
}
func (node *Node) AddEventListener(name string, callback func(Event)) {
if node.Properties.EventListeners == nil {
node.Properties.EventListeners = make(map[string][]func(Event))
}
if node.Properties.EventListeners[name] == nil {
node.Properties.EventListeners[name] = []func(Event){}
}
if !funcInSlice(callback, node.Properties.EventListeners[name]) {
node.Properties.EventListeners[name] = append(node.Properties.EventListeners[name], callback)
}
}
func (node *Node) DispatchEvent(event string) {
// I want to use dispatch event to dispatch a scroll event if the user scrolls too far on a container from crop
node.Properties.Events = append(node.Properties.Events, event)
}
func funcInSlice(f func(Event), slice []func(Event)) bool {
for _, item := range slice {
// Compare function values directly
if fmt.Sprintf("%p", item) == fmt.Sprintf("%p", f) {
return true
}
}
return false
}