forked from sheetjs/docs.sheetjs.com
109 lines
3.0 KiB
Go
109 lines
3.0 KiB
Go
package main
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import (
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"context"
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"encoding/base64"
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"fmt"
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"github.com/wailsapp/wails/v2/pkg/runtime"
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"io/ioutil"
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)
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// App struct
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type App struct {
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ctx context.Context
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}
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// NewApp creates a new App application struct
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func NewApp() *App {
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return &App{}
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}
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// startup is called when the app starts. The context is saved
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// so we can call the runtime methods
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func (a *App) startup(ctx context.Context) {
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a.ctx = ctx
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}
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// Greet returns a greeting for the given name
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func (a *App) Greet(name string) string {
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return fmt.Sprintf("Hello %s, It's show time!", name)
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}
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// ShowError displays an error message in a desktop dialog.
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func (a *App) ShowError(title string, message string) {
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_, _ = runtime.MessageDialog(a.ctx, runtime.MessageDialogOptions{
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Type: runtime.ErrorDialog,
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Title: title,
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Message: message,
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})
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}
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// ShowInfo displays an info message in a desktop dialog.
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func (a *App) ShowInfo(title string, message string) {
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_, _ = runtime.MessageDialog(a.ctx, runtime.MessageDialogOptions{
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Type: runtime.InfoDialog,
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Title: title,
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Message: message,
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})
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}
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// ReadFile shows an open file dialog and returns the data as Base64 string
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func (a *App) ReadFile() string {
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selection, err := runtime.OpenFileDialog(a.ctx, runtime.OpenDialogOptions{
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Title: "Select File",
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Filters: []runtime.FileFilter{
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{DisplayName: "Excel '97-2004 Workbooks (*.xls)", Pattern: "*.xls"},
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{DisplayName: "Excel Workbooks (*.xlsx)", Pattern: "*.xlsx"},
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{DisplayName: "Excel Binary Workbooks (*.xlsb)", Pattern: "*.xlsb"},
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{DisplayName: "Numbers Spreadsheets (*.numbers)", Pattern: "*.numbers"},
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},
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})
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if err != nil {
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_, _ = runtime.MessageDialog(a.ctx, runtime.MessageDialogOptions{
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Type: runtime.ErrorDialog,
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Title: "Selection Error",
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Message: err.Error(),
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})
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return ""
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}
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data, err := ioutil.ReadFile(selection)
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if err != nil {
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_, _ = runtime.MessageDialog(a.ctx, runtime.MessageDialogOptions{
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Type: runtime.ErrorDialog,
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Title: "Read Error",
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Message: err.Error(),
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})
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return ""
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}
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return base64.StdEncoding.EncodeToString(data)
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}
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// SaveFile shows a save file dialog and returns the path
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func (a *App) SaveFile() string {
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selection, err := runtime.SaveFileDialog(a.ctx, runtime.SaveDialogOptions{
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Title: "Select File",
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DefaultFilename: "SheetJSWails.xlsx",
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Filters: []runtime.FileFilter{
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{DisplayName: "Excel '97-2004 Workbooks (*.xls)", Pattern: "*.xls"},
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{DisplayName: "Excel Workbooks (*.xlsx)", Pattern: "*.xlsx"},
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{DisplayName: "Excel Binary Workbooks (*.xlsb)", Pattern: "*.xlsb"},
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{DisplayName: "Numbers Spreadsheets (*.numbers)", Pattern: "*.numbers"},
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},
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})
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if err != nil {
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_, _ = runtime.MessageDialog(a.ctx, runtime.MessageDialogOptions{
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Type: runtime.ErrorDialog,
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Title: "Selection Error",
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Message: err.Error(),
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})
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return ""
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}
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return selection
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}
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// WriteFile decodes the first argument and writes to file
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func (a *App) WriteFile(b64 string, path string) {
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buf, _ := base64.StdEncoding.DecodeString(b64)
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_ = ioutil.WriteFile(path, buf, 0644)
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}
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