Commits
Diff
diff --git a/element/main.go b/element/main.go
index 60b6793..96a1ffe 100644
--- a/element/main.go
+++ b/element/main.go
@@ -54,0 +55 @@ type State struct {
+ Hash string
@@ -56,0 +58,2 @@ type State struct {
+ Style map[string]string
+ Swap Node
package element
import (
"fmt"
"gui/selector"
"image"
ic "image/color"
"math/rand"
"strings"
"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
ScrollY float32
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
Texture *image.RGBA
EM float32
Background ic.RGBA
Color ic.RGBA
Margin MarginPadding
Padding MarginPadding
}
// !FLAG: Plan to get rid of this
type Properties struct {
Id string
EventListeners map[string][]func(Event) `json:"-"`
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 {
Width float32
Style string
Color ic.RGBA
Radius string
}
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
}
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 {
if n.Properties.Focused {
selectors = append(selectors, ":focus")
}
}
classes := n.ClassList.Classes
for _, v := range classes {
selectors = append(selectors, "."+v)
}
if n.Id != "" {
selectors = append(selectors, "#"+n.Id)
}
selectors = append(selectors, n.TagName)
part := selector.SplitSelector(strings.TrimSpace(parts[len(parts)-1]))
has := selector.Contains(part, selectors)
if len(parts) == 1 || !has {
return has
} else {
return TestSelector(strings.Join(parts[0:len(parts)-1], ">"), n.Parent)
}
}
func (n *Node) AppendChild(c Node) {
c.Parent = n
// Set Id
randomInt := rand.Intn(10000)
c.Properties.Id = c.TagName + fmt.Sprint(randomInt+len(c.Parent.Children))
n.Children = append(n.Children, c)
}
func (n *Node) InsertAfter(c, tgt Node) {
c.Parent = n
// Set Id
randomInt := rand.Intn(10000)
c.Properties.Id = c.TagName + fmt.Sprint(randomInt+len(c.Parent.Children))
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
randomInt := rand.Intn(10000)
c.Properties.Id = c.TagName + fmt.Sprint(randomInt+len(c.Parent.Children))
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:]...)...)
} 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")
}
}
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
}
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){}
}
node.Properties.EventListeners[name] = append(node.Properties.EventListeners[name], callback)
}