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rui
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Added FilePicker

This commit is contained in:
anoshenko 2021-11-04 14:59:25 +03:00
parent f64f6d2bca
commit 04bbd47f66
14 changed files with 595 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
appLog.go
View File

@ -45,8 +45,11 @@ func DebugLogF(format string, a ...interface{}) {
}
}
var lastError = ""
// ErrorLog print the text to the error log
func ErrorLog(text string) {
lastError = text
if errorLogFunc != nil {
errorLogFunc(text)
errorStack()
@ -55,12 +58,18 @@ func ErrorLog(text string) {
// ErrorLogF print the text to the error log
func ErrorLogF(format string, a ...interface{}) {
lastError = fmt.Sprintf(format, a...)
if errorLogFunc != nil {
errorLogFunc(fmt.Sprintf(format, a...))
errorLogFunc(lastError)
errorStack()
}
}
// LastError returns the last error text
func LastError() string {
return lastError
}
func errorStack() {
if errorLogFunc != nil {
skip := 2

44
app_scripts.js
View File

@ -989,6 +989,50 @@ function setInputValue(elementId, text) {
}
}
function fileSelectedEvent(element) {
var files = element.files;
if (files) {
var message = "fileSelected{session=" + sessionID + ",id=" + element.id + ",files=[";
for(var i = 0; i < files.length; i++) {
if (i > 0) {
message += ",";
}
message += "_{name=\"" + files[i].name +
"\",last-modified=" + files[i].lastModified +
",size=" + files[i].size +
",mime-type=\"" + files[i].type + "\"}";
}
sendMessage(message + "]}");
}
}
function loadSelectedFile(elementId, index) {
var element = document.getElementById(elementId);
if (element) {
var files = element.files;
if (files && index >= 0 && index < files.length) {
const reader = new FileReader();
reader.onload = function() {
sendMessage("fileLoaded{session=" + sessionID + ",id=" + element.id +
",index=" + index +
",name=\"" + files[index].name +
"\",last-modified=" + files[index].lastModified +
",size=" + files[index].size +
",mime-type=\"" + files[index].type +
"\",data=`" + reader.result + "`}");
}
reader.onerror = function(error) {
sendMessage("fileLoadingError{session=" + sessionID + ",id=" + element.id + ",index=" + index + ",error=`" + error + "`}");
}
reader.readAsDataURL(files[index]);
} else {
sendMessage("fileLoadingError{session=" + sessionID + ",id=" + element.id + ",index=" + index + ",error=`File not found`}");
}
} else {
sendMessage("fileLoadingError{session=" + sessionID + ",id=" + element.id + ",index=" + index + ",error=`Invalid FilePicker id`}");
}
}
function startResize(element, mx, my, event) {
var view = element.parentNode;
if (!view) {

39
demo/filePickerDemo.go Normal file
View File

@ -0,0 +1,39 @@
package main
import (
"github.com/anoshenko/rui"
)
const filePickerDemoText = `
GridLayout {
width = 100%, height = 100%, cell-height = "auto, 1fr",
content = [
FilePicker {
id = filePicker, accept = "txt, html"
},
EditView {
id = selectedFileData, row = 1, type = multiline, read-only = true, wrap = true,
}
]
}
`
func createFilePickerDemo(session rui.Session) rui.View {
view := rui.CreateViewFromText(session, filePickerDemoText)
if view == nil {
return nil
}
rui.Set(view, "filePicker", rui.FileSelectedEvent, func(picker rui.FilePicker, files []rui.FileInfo) {
if len(files) > 0 {
picker.LoadFile(files[0], func(file rui.FileInfo, data []byte) {
if data != nil {
rui.Set(view, "selectedFileData", rui.Text, string(data))
} else {
rui.Set(view, "selectedFileData", rui.Text, rui.LastError())
}
})
}
})
return view
}

1
demo/main.go
View File

@ -82,6 +82,7 @@ func createDemo(session rui.Session) rui.SessionContent {
{"ListView", createListViewDemo, nil},
{"Checkbox", createCheckboxDemo, nil},
{"Controls", createControlsDemo, nil},
{"FilePicker", createFilePickerDemo, nil},
{"TableView", createTableViewDemo, nil},
{"EditView", createEditDemo, nil},
{"ImageView", createImageViewDemo, nil},

26
demo/splitViewDemo.go
View File

@ -1,26 +0,0 @@
package main
/*
import (
"github.com/anoshenko/rui"
)
const splitViewDemoText = `
SplitView {
width = 100%, height = 100%, orientation = vertical, anchor = bottom, padding = 2px,
view1 = GridLayout { width = 100%, height = 75%, content = ["View 1"], cell-vertical-align = center, cell-horizontal-align = center,
border = _{ width = 1px, style = solid, color = #FF000000 }, radius = 8px,},
view2 = GridLayout { width = 100%, height = 25%, content = ["View 2"], cell-align = center,
border = _{ width = 1px, style = solid, color = #FF000000 }, radius = 8px,},
}
`
func createSplitViewDemo(session rui.Session) rui.View {
view := rui.CreateViewFromText(session, splitViewDemoText)
if view == nil {
return nil
}
return view
}
*/

414
filePicker.go Normal file
View File

@ -0,0 +1,414 @@
package rui
import (
"encoding/base64"
"fmt"
"strconv"
"strings"
"time"
)
const (
// FileSelectedEvent is the constant for "file-selected-event" property tag.
// The "file-selected-event" is fired when user selects file(s) in the FilePicker.
FileSelectedEvent = "file-selected-event"
// Accept is the constant for "accept" property tag.
// The "accept" property of the FilePicker sets the list of allowed file extensions or MIME types.
Accept = "accept"
// Multiple is the constant for "multiple" property tag.
// The "multiple" bool property of the FilePicker sets whether multiple files can be selected
Multiple = "multiple"
)
// FileInfo describes a file which selected in the FilePicker view
type FileInfo struct {
// Name - the file's name.
Name string
// LastModified specifying the date and time at which the file was last modified
LastModified time.Time
// Size - the size of the file in bytes.
Size int64
// MimeType - the file's MIME type.
MimeType string
}
// FilePicker - the control view for the files selecting
type FilePicker interface {
View
// Files returns the list of selected files.
// If there are no files selected then an empty slice is returned (the result is always not nil)
Files() []FileInfo
// LoadFile loads the content of the selected file. This function is asynchronous.
// The "result" function will be called after loading the data.
LoadFile(file FileInfo, result func(FileInfo, []byte))
}
type filePickerData struct {
viewData
files []FileInfo
fileSelectedListeners []func(FilePicker, []FileInfo)
loader map[int]func(FileInfo, []byte)
}
func (file *FileInfo) initBy(node DataValue) {
if obj := node.Object(); obj != nil {
file.Name, _ = obj.PropertyValue("name")
file.MimeType, _ = obj.PropertyValue("mime-type")
if size, ok := obj.PropertyValue("size"); ok {
if n, err := strconv.ParseInt(size, 10, 64); err == nil {
file.Size = n
}
}
if value, ok := obj.PropertyValue("last-modified"); ok {
if n, err := strconv.ParseInt(value, 10, 64); err == nil {
file.LastModified = time.UnixMilli(n)
}
}
}
}
// NewFilePicker create new FilePicker object and return it
func NewFilePicker(session Session, params Params) FilePicker {
view := new(filePickerData)
view.Init(session)
setInitParams(view, params)
return view
}
func newFilePicker(session Session) View {
return NewFilePicker(session, nil)
}
func (picker *filePickerData) Init(session Session) {
picker.viewData.Init(session)
picker.tag = "FilePicker"
picker.files = []FileInfo{}
picker.loader = map[int]func(FileInfo, []byte){}
picker.fileSelectedListeners = []func(FilePicker, []FileInfo){}
}
func (picker *filePickerData) Files() []FileInfo {
return picker.files
}
func (picker *filePickerData) LoadFile(file FileInfo, result func(FileInfo, []byte)) {
if result == nil {
return
}
for i, info := range picker.files {
if info.Name == file.Name && info.Size == file.Size && info.LastModified == file.LastModified {
picker.loader[i] = result
picker.Session().runScript(fmt.Sprintf(`loadSelectedFile("%s", %d)`, picker.htmlID(), i))
return
}
}
}
func (picker *filePickerData) Remove(tag string) {
picker.remove(strings.ToLower(tag))
}
func (picker *filePickerData) remove(tag string) {
switch tag {
case FileSelectedEvent:
picker.fileSelectedListeners = []func(FilePicker, []FileInfo){}
default:
picker.viewData.remove(tag)
}
}
func (picker *filePickerData) Set(tag string, value interface{}) bool {
return picker.set(strings.ToLower(tag), value)
}
func (picker *filePickerData) set(tag string, value interface{}) bool {
if value == nil {
picker.remove(tag)
return true
}
switch tag {
case FileSelectedEvent:
switch value := value.(type) {
case func(FilePicker, []FileInfo):
picker.fileSelectedListeners = []func(FilePicker, []FileInfo){value}
case func([]FileInfo):
fn := func(view FilePicker, files []FileInfo) {
value(files)
}
picker.fileSelectedListeners = []func(FilePicker, []FileInfo){fn}
case []func(FilePicker, []FileInfo):
picker.fileSelectedListeners = value
case []func([]FileInfo):
listeners := make([]func(FilePicker, []FileInfo), len(value))
for i, val := range value {
if val == nil {
notCompatibleType(tag, val)
return false
}
listeners[i] = func(view FilePicker, files []FileInfo) {
val(files)
}
}
picker.fileSelectedListeners = listeners
case []interface{}:
listeners := make([]func(FilePicker, []FileInfo), len(value))
for i, val := range value {
if val == nil {
notCompatibleType(tag, val)
return false
}
switch val := val.(type) {
case func(FilePicker, []FileInfo):
listeners[i] = val
case func([]FileInfo):
listeners[i] = func(view FilePicker, files []FileInfo) {
val(files)
}
default:
notCompatibleType(tag, val)
return false
}
}
picker.fileSelectedListeners = listeners
}
return true
case Accept:
switch value := value.(type) {
case string:
value = strings.Trim(value, " \t\n")
if value == "" {
picker.remove(Accept)
} else {
picker.properties[Accept] = value
}
case []string:
buffer := allocStringBuilder()
defer freeStringBuilder(buffer)
for _, val := range value {
val = strings.Trim(val, " \t\n")
if val != "" {
if buffer.Len() > 0 {
buffer.WriteRune(',')
}
buffer.WriteString(val)
}
}
if buffer.Len() == 0 {
picker.remove(Accept)
} else {
picker.properties[Accept] = buffer.String()
}
default:
notCompatibleType(tag, value)
return false
}
return true
default:
return picker.viewData.set(tag, value)
}
}
func (picker *filePickerData) htmlTag() string {
return "input"
}
func (picker *filePickerData) acceptCSS() string {
accept, ok := stringProperty(picker, Accept, picker.Session())
if !ok {
accept, ok = valueFromStyle(picker, Accept)
}
if ok {
buffer := allocStringBuilder()
defer freeStringBuilder(buffer)
for _, value := range strings.Split(accept, ",") {
if value = strings.Trim(value, " \t\n"); value != "" {
if buffer.Len() > 0 {
buffer.WriteString(", ")
}
if value[0] != '.' && !strings.Contains(value, "/") {
buffer.WriteRune('.')
}
buffer.WriteString(value)
}
}
return buffer.String()
}
return ""
}
func (picker *filePickerData) htmlProperties(self View, buffer *strings.Builder) {
picker.viewData.htmlProperties(self, buffer)
if accept := picker.acceptCSS(); accept != "" {
buffer.WriteString(` accept="`)
buffer.WriteString(accept)
buffer.WriteRune('"')
}
buffer.WriteString(` type="file"`)
if multiple, ok := boolStyledProperty(picker, Multiple); ok && multiple {
buffer.WriteString(` multiple`)
}
buffer.WriteString(` oninput="fileSelectedEvent(this)"`)
}
func (picker *filePickerData) htmlDisabledProperties(self View, buffer *strings.Builder) {
if IsDisabled(self) {
buffer.WriteString(` disabled`)
}
picker.viewData.htmlDisabledProperties(self, buffer)
}
func (picker *filePickerData) handleCommand(self View, command string, data DataObject) bool {
switch command {
case "fileSelected":
if node := data.PropertyWithTag("files"); node != nil && node.Type() == ArrayNode {
count := node.ArraySize()
files := make([]FileInfo, count)
for i := 0; i < count; i++ {
if value := node.ArrayElement(i); value != nil {
files[i].initBy(value)
}
}
picker.files = files
for _, listener := range picker.fileSelectedListeners {
listener(picker, files)
}
}
return true
case "fileLoaded":
if index, ok := dataIntProperty(data, "index"); ok {
if result, ok := picker.loader[index]; ok {
var file FileInfo
file.initBy(data)
var fileData []byte = nil
if base64Data, ok := data.PropertyValue("data"); ok {
if index := strings.LastIndex(base64Data, ","); index >= 0 {
base64Data = base64Data[index+1:]
}
decode, err := base64.StdEncoding.DecodeString(base64Data)
if err == nil {
fileData = decode
} else {
ErrorLog(err.Error())
}
}
result(file, fileData)
delete(picker.loader, index)
}
}
return true
case "fileLoadingError":
if error, ok := data.PropertyValue("error"); ok {
ErrorLog(error)
}
if index, ok := dataIntProperty(data, "index"); ok {
if result, ok := picker.loader[index]; ok {
if index >= 0 && index < len(picker.files) {
result(picker.files[index], nil)
} else {
result(FileInfo{}, nil)
}
delete(picker.loader, index)
}
}
return true
}
return picker.viewData.handleCommand(self, command, data)
}
// GetFilePickerFiles returns the list of FilePicker selected files
// If there are no files selected then an empty slice is returned (the result is always not nil)
// If the second argument (subviewID) is "" then selected files of the first argument (view) is returned
func GetFilePickerFiles(view View, subviewID string) []FileInfo {
if picker := FilePickerByID(view, subviewID); picker != nil {
return picker.Files()
}
return []FileInfo{}
}
// LoadFilePickerFile loads the content of the selected file. This function is asynchronous.
// The "result" function will be called after loading the data.
// If the second argument (subviewID) is "" then the file from the first argument (view) is loaded
func LoadFilePickerFile(view View, subviewID string, file FileInfo, result func(FileInfo, []byte)) {
if picker := FilePickerByID(view, subviewID); picker != nil {
picker.LoadFile(file, result)
}
}
// IsMultipleFilePicker returns "true" if multiple files can be selected in the FilePicker, "false" otherwise.
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func IsMultipleFilePicker(view View, subviewID string) bool {
if subviewID != "" {
view = ViewByID(view, subviewID)
}
if view != nil {
if result, ok := boolStyledProperty(view, Multiple); ok {
return result
}
}
return false
}
// GetFilePickerAccept returns sets the list of allowed file extensions or MIME types.
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetFilePickerAccept(view View, subviewID string) []string {
if subviewID != "" {
view = ViewByID(view, subviewID)
}
if view != nil {
accept, ok := stringProperty(view, Accept, view.Session())
if !ok {
accept, ok = valueFromStyle(view, Accept)
}
if ok {
result := strings.Split(accept, ",")
for i := 0; i < len(result); i++ {
result[i] = strings.Trim(result[i], " \t\n")
}
return result
}
}
return []string{}
}
// GetFileSelectedListeners returns the "file-selected-event" listener list.
// If there are no listeners then the empty list is returned.
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetFileSelectedListeners(view View, subviewID string) []func(FilePicker, []FileInfo) {
if subviewID != "" {
view = ViewByID(view, subviewID)
}
if view != nil {
if value := view.Get(FileSelectedEvent); value != nil {
if result, ok := value.([]func(FilePicker, []FileInfo)); ok {
return result
}
}
}
return []func(FilePicker, []FileInfo){}
}

2
mediaPlayer.go
View File

@ -844,7 +844,7 @@ func (player *mediaPlayerData) handleCommand(self View, command string, data Dat
case PlayerErrorEvent:
if value := player.getRaw(command); value != nil {
if listeners, ok := value.([]func(MediaPlayer, int, string)); ok {
code := dataIntProperty(data, "code")
code, _ := dataIntProperty(data, "code")
message, _ := data.PropertyValue("message")
for _, listener := range listeners {
listener(player, code, message)

4
mouseEvents.go
View File

@ -328,8 +328,8 @@ func getTimeStamp(data DataObject) uint64 {
func (event *MouseEvent) init(data DataObject) {
event.TimeStamp = getTimeStamp(data)
event.Button = dataIntProperty(data, "button")
event.Buttons = dataIntProperty(data, "buttons")
event.Button, _ = dataIntProperty(data, "button")
event.Buttons, _ = dataIntProperty(data, "buttons")
event.X = dataFloatProperty(data, "x")
event.Y = dataFloatProperty(data, "y")
event.ClientX = dataFloatProperty(data, "clientX")

2
pointerEvents.go
View File

@ -277,7 +277,7 @@ func pointerEventsHtml(view View, buffer *strings.Builder) {
func (event *PointerEvent) init(data DataObject) {
event.MouseEvent.init(data)
event.PointerID = dataIntProperty(data, "pointerId")
event.PointerID, _ = dataIntProperty(data, "pointerId")
event.Width = dataFloatProperty(data, "width")
event.Height = dataFloatProperty(data, "height")
event.Pressure = dataFloatProperty(data, "pressure")

1
propertySet.go
View File

@ -55,6 +55,7 @@ var boolProperties = []string{
Loop,
Muted,
AnimationPaused,
Multiple,
}
var intProperties = []string{

6
utils.go
View File

@ -52,13 +52,13 @@ func GetLocalIP() string {
return "localhost"
}
func dataIntProperty(data DataObject, tag string) int {
func dataIntProperty(data DataObject, tag string) (int, bool) {
if value, ok := data.PropertyValue(tag); ok {
if n, err := strconv.Atoi(value); err == nil {
return n
return n, true
}
}
return 0
return 0, false
}
func dataBoolProperty(data DataObject, tag string) bool {

86
viewByID.go
View File

@ -36,7 +36,7 @@ func viewByID(rootView ParanetView, id string) View {
}
// ViewsContainerByID return a ViewsContainer with id equal to the argument of the function or
// nil if there is no such View or View is not ViewsContainer
// nil if there is no such View or View is not ViewsContainer
func ViewsContainerByID(rootView View, id string) ViewsContainer {
if view := ViewByID(rootView, id); view != nil {
if list, ok := view.(ViewsContainer); ok {
@ -48,7 +48,7 @@ func ViewsContainerByID(rootView View, id string) ViewsContainer {
}
// ListLayoutByID return a ListLayout with id equal to the argument of the function or
// nil if there is no such View or View is not ListLayout
// nil if there is no such View or View is not ListLayout
func ListLayoutByID(rootView View, id string) ListLayout {
if view := ViewByID(rootView, id); view != nil {
if list, ok := view.(ListLayout); ok {
@ -60,7 +60,7 @@ func ListLayoutByID(rootView View, id string) ListLayout {
}
// StackLayoutByID return a StackLayout with id equal to the argument of the function or
// nil if there is no such View or View is not StackLayout
// nil if there is no such View or View is not StackLayout
func StackLayoutByID(rootView View, id string) StackLayout {
if view := ViewByID(rootView, id); view != nil {
if list, ok := view.(StackLayout); ok {
@ -72,7 +72,7 @@ func StackLayoutByID(rootView View, id string) StackLayout {
}
// GridLayoutByID return a GridLayout with id equal to the argument of the function or
// nil if there is no such View or View is not GridLayout
// nil if there is no such View or View is not GridLayout
func GridLayoutByID(rootView View, id string) GridLayout {
if view := ViewByID(rootView, id); view != nil {
if list, ok := view.(GridLayout); ok {
@ -84,7 +84,7 @@ func GridLayoutByID(rootView View, id string) GridLayout {
}
// ColumnLayoutByID return a ColumnLayout with id equal to the argument of the function or
// nil if there is no such View or View is not ColumnLayout
// nil if there is no such View or View is not ColumnLayout
func ColumnLayoutByID(rootView View, id string) ColumnLayout {
if view := ViewByID(rootView, id); view != nil {
if list, ok := view.(ColumnLayout); ok {
@ -96,7 +96,7 @@ func ColumnLayoutByID(rootView View, id string) ColumnLayout {
}
// DetailsViewByID return a ColumnLayout with id equal to the argument of the function or
// nil if there is no such View or View is not DetailsView
// nil if there is no such View or View is not DetailsView
func DetailsViewByID(rootView View, id string) DetailsView {
if view := ViewByID(rootView, id); view != nil {
if details, ok := view.(DetailsView); ok {
@ -108,7 +108,7 @@ func DetailsViewByID(rootView View, id string) DetailsView {
}
// DropDownListByID return a DropDownListView with id equal to the argument of the function or
// nil if there is no such View or View is not DropDownListView
// nil if there is no such View or View is not DropDownListView
func DropDownListByID(rootView View, id string) DropDownList {
if view := ViewByID(rootView, id); view != nil {
if list, ok := view.(DropDownList); ok {
@ -120,7 +120,7 @@ func DropDownListByID(rootView View, id string) DropDownList {
}
// TabsLayoutByID return a TabsLayout with id equal to the argument of the function or
// nil if there is no such View or View is not TabsLayout
// nil if there is no such View or View is not TabsLayout
func TabsLayoutByID(rootView View, id string) TabsLayout {
if view := ViewByID(rootView, id); view != nil {
if list, ok := view.(TabsLayout); ok {
@ -132,7 +132,7 @@ func TabsLayoutByID(rootView View, id string) TabsLayout {
}
// ListViewByID return a ListView with id equal to the argument of the function or
// nil if there is no such View or View is not ListView
// nil if there is no such View or View is not ListView
func ListViewByID(rootView View, id string) ListView {
if view := ViewByID(rootView, id); view != nil {
if list, ok := view.(ListView); ok {
@ -144,7 +144,7 @@ func ListViewByID(rootView View, id string) ListView {
}
// TextViewByID return a TextView with id equal to the argument of the function or
// nil if there is no such View or View is not TextView
// nil if there is no such View or View is not TextView
func TextViewByID(rootView View, id string) TextView {
if view := ViewByID(rootView, id); view != nil {
if text, ok := view.(TextView); ok {
@ -156,7 +156,7 @@ func TextViewByID(rootView View, id string) TextView {
}
// ButtonByID return a Button with id equal to the argument of the function or
// nil if there is no such View or View is not Button
// nil if there is no such View or View is not Button
func ButtonByID(rootView View, id string) Button {
if view := ViewByID(rootView, id); view != nil {
if button, ok := view.(Button); ok {
@ -168,7 +168,7 @@ func ButtonByID(rootView View, id string) Button {
}
// CheckboxByID return a Checkbox with id equal to the argument of the function or
// nil if there is no such View or View is not Checkbox
// nil if there is no such View or View is not Checkbox
func CheckboxByID(rootView View, id string) Checkbox {
if view := ViewByID(rootView, id); view != nil {
if checkbox, ok := view.(Checkbox); ok {
@ -180,7 +180,7 @@ func CheckboxByID(rootView View, id string) Checkbox {
}
// EditViewByID return a EditView with id equal to the argument of the function or
// nil if there is no such View or View is not EditView
// nil if there is no such View or View is not EditView
func EditViewByID(rootView View, id string) EditView {
if view := ViewByID(rootView, id); view != nil {
if buttons, ok := view.(EditView); ok {
@ -192,7 +192,7 @@ func EditViewByID(rootView View, id string) EditView {
}
// ProgressBarByID return a ProgressBar with id equal to the argument of the function or
// nil if there is no such View or View is not ProgressBar
// nil if there is no such View or View is not ProgressBar
func ProgressBarByID(rootView View, id string) ProgressBar {
if view := ViewByID(rootView, id); view != nil {
if buttons, ok := view.(ProgressBar); ok {
@ -203,8 +203,20 @@ func ProgressBarByID(rootView View, id string) ProgressBar {
return nil
}
// ColorPickerByID return a ColorPicker with id equal to the argument of the function or
// nil if there is no such View or View is not ColorPicker
func ColorPickerByID(rootView View, id string) ColorPicker {
if view := ViewByID(rootView, id); view != nil {
if input, ok := view.(ColorPicker); ok {
return input
}
ErrorLog(`ColorPickerByID(_, "` + id + `"): The found View is not ColorPicker`)
}
return nil
}
// NumberPickerByID return a NumberPicker with id equal to the argument of the function or
// nil if there is no such View or View is not NumberPicker
// nil if there is no such View or View is not NumberPicker
func NumberPickerByID(rootView View, id string) NumberPicker {
if view := ViewByID(rootView, id); view != nil {
if input, ok := view.(NumberPicker); ok {
@ -215,8 +227,44 @@ func NumberPickerByID(rootView View, id string) NumberPicker {
return nil
}
// TimePickerByID return a TimePicker with id equal to the argument of the function or
// nil if there is no such View or View is not TimePicker
func TimePickerByID(rootView View, id string) TimePicker {
if view := ViewByID(rootView, id); view != nil {
if input, ok := view.(TimePicker); ok {
return input
}
ErrorLog(`TimePickerByID(_, "` + id + `"): The found View is not TimePicker`)
}
return nil
}
// DatePickerByID return a DatePicker with id equal to the argument of the function or
// nil if there is no such View or View is not DatePicker
func DatePickerByID(rootView View, id string) DatePicker {
if view := ViewByID(rootView, id); view != nil {
if input, ok := view.(DatePicker); ok {
return input
}
ErrorLog(`DatePickerByID(_, "` + id + `"): The found View is not DatePicker`)
}
return nil
}
// FilePickerByID return a FilePicker with id equal to the argument of the function or
// nil if there is no such View or View is not FilePicker
func FilePickerByID(rootView View, id string) FilePicker {
if view := ViewByID(rootView, id); view != nil {
if input, ok := view.(FilePicker); ok {
return input
}
ErrorLog(`FilePickerByID(_, "` + id + `"): The found View is not FilePicker`)
}
return nil
}
// CanvasViewByID return a CanvasView with id equal to the argument of the function or
// nil if there is no such View or View is not CanvasView
// nil if there is no such View or View is not CanvasView
func CanvasViewByID(rootView View, id string) CanvasView {
if view := ViewByID(rootView, id); view != nil {
if canvas, ok := view.(CanvasView); ok {
@ -229,7 +277,7 @@ func CanvasViewByID(rootView View, id string) CanvasView {
/*
// TableViewByID return a TableView with id equal to the argument of the function or
// nil if there is no such View or View is not TableView
// nil if there is no such View or View is not TableView
func TableViewByID(rootView View, id string) TableView {
if view := ViewByID(rootView, id); view != nil {
if canvas, ok := view.(TableView); ok {
@ -242,7 +290,7 @@ func TableViewByID(rootView View, id string) TableView {
*/
// AudioPlayerByID return a AudioPlayer with id equal to the argument of the function or
// nil if there is no such View or View is not AudioPlayer
// nil if there is no such View or View is not AudioPlayer
func AudioPlayerByID(rootView View, id string) AudioPlayer {
if view := ViewByID(rootView, id); view != nil {
if canvas, ok := view.(AudioPlayer); ok {
@ -254,7 +302,7 @@ func AudioPlayerByID(rootView View, id string) AudioPlayer {
}
// VideoPlayerByID return a VideoPlayer with id equal to the argument of the function or
// nil if there is no such View or View is not VideoPlayer
// nil if there is no such View or View is not VideoPlayer
func VideoPlayerByID(rootView View, id string) VideoPlayer {
if view := ViewByID(rootView, id); view != nil {
if canvas, ok := view.(VideoPlayer); ok {

1
viewFactory.go
View File

@ -24,6 +24,7 @@ var viewCreators = map[string]func(Session) View{
"ColorPicker": newColorPicker,
"DatePicker": newDatePicker,
"TimePicker": newTimePicker,
"FilePicker": newFilePicker,
"EditView": newEditView,
"ListView": newListView,
"CanvasView": newCanvasView,

22
viewUtils.go
View File

@ -11,8 +11,8 @@ func Get(rootView View, viewID, tag string) interface{} {
}
// Set sets the property with name "tag" of the "rootView" subview with "viewID" id by value. Result:
// true - success,
// false - error (incompatible type or invalid format of a string value, see AppLog).
// true - success,
// false - error (incompatible type or invalid format of a string value, see AppLog).
func Set(rootView View, viewID, tag string, value interface{}) bool {
if view := ViewByID(rootView, viewID); view != nil {
return view.Set(tag, value)
@ -21,8 +21,8 @@ func Set(rootView View, viewID, tag string, value interface{}) bool {
}
// SetParams sets properties with name "tag" of the "rootView" subview. Result:
// true - all properties were set successful,
// false - error (incompatible type or invalid format of a string value, see AppLog).
// true - all properties were set successful,
// false - error (incompatible type or invalid format of a string value, see AppLog).
func SetParams(rootView View, viewID string, params Params) bool {
view := ViewByID(rootView, viewID)
if view == nil {
@ -678,8 +678,8 @@ func GetTextTransform(view View, subviewID string) int {
}
// GetWritingMode returns whether lines of text are laid out horizontally or vertically, as well as
// the direction in which blocks progress. Valid values are HorizontalTopToBottom (0),
// HorizontalBottomToTop (1), VerticalRightToLeft (2) and VerticalLeftToRight (3)
// the direction in which blocks progress. Valid values are HorizontalTopToBottom (0),
// HorizontalBottomToTop (1), VerticalRightToLeft (2) and VerticalLeftToRight (3)
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetWritingMode(view View, subviewID string) int {
if subviewID != "" {
@ -697,7 +697,7 @@ func GetWritingMode(view View, subviewID string) int {
}
// GetTextDirection - returns a direction of text, table columns, and horizontal overflow.
// Valid values are Inherit (0), LeftToRightDirection (1), and RightToLeftDirection (2).
// Valid values are Inherit (0), LeftToRightDirection (1), and RightToLeftDirection (2).
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetTextDirection(view View, subviewID string) int {
if subviewID != "" {
@ -716,8 +716,8 @@ func GetTextDirection(view View, subviewID string) int {
}
// GetVerticalTextOrientation returns a orientation of the text characters in a line. It only affects text
// in vertical mode (when "writing-mode" is "vertical-right-to-left" or "vertical-left-to-right").
// Valid values are MixedTextOrientation (0), UprightTextOrientation (1), and SidewaysTextOrientation (2).
// in vertical mode (when "writing-mode" is "vertical-right-to-left" or "vertical-left-to-right").
// Valid values are MixedTextOrientation (0), UprightTextOrientation (1), and SidewaysTextOrientation (2).
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetVerticalTextOrientation(view View, subviewID string) int {
if subviewID != "" {
@ -804,8 +804,8 @@ func GetPerspectiveOrigin(view View, subviewID string) (SizeUnit, SizeUnit) {
// GetBackfaceVisible returns a bool property that sets whether the back face of an element is
// visible when turned towards the user. Values:
// true - the back face is visible when turned towards the user (default value).
// false - the back face is hidden, effectively making the element invisible when turned away from the user.
// true - the back face is visible when turned towards the user (default value).
// false - the back face is hidden, effectively making the element invisible when turned away from the user.
// If the second argument (subviewID) is "" then a value from the first argument (view) is returned.
func GetBackfaceVisible(view View, subviewID string) bool {
if subviewID != "" {