gogio: add deeplink support

gogio/androidbuild.go

@@ -48,6 +48,7 @@ type manifestData struct {
 	Features    []string
 	IconSnip    string
 	AppName     string
+	Schemes     []string
 }
 
 const (
@@ -445,6 +446,7 @@ func exeAndroid(tmpDir string, tools *androidTools, bi *buildInfo, extraJars, pe
 		Features:    features,
 		IconSnip:    iconSnip,
 		AppName:     appName,
+		Schemes:     bi.schemes,
 	}
 	tmpl, err := template.New("test").Parse(
 		`<?xml version="1.0" encoding="utf-8"?>
@@ -461,11 +463,20 @@ func exeAndroid(tmpDir string, tools *androidTools, bi *buildInfo, extraJars, pe
 			android:theme="@style/Theme.GioApp"
 			android:configChanges="screenSize|screenLayout|smallestScreenSize|orientation|keyboardHidden"
 			android:windowSoftInputMode="adjustResize"
+			android:launchMode= "singleInstance"
 			android:exported="true">
 			<intent-filter>
 				<action android:name="android.intent.action.MAIN" />
 				<category android:name="android.intent.category.LAUNCHER" />
 			</intent-filter>
+			{{range .Schemes}}
+			<intent-filter>
+				<action android:name="android.intent.action.VIEW"></action>
+				<category android:name="android.intent.category.DEFAULT"></category>
+				<category android:name="android.intent.category.BROWSABLE"></category>
+				<data android:scheme="{{.}}"></data>
+			</intent-filter>
+			{{end}}
 		</activity>
 	</application>
 </manifest>`)

gogio/build_info.go

@@ -30,6 +30,7 @@ type buildInfo struct {
 	notaryAppleID  string
 	notaryPassword string
 	notaryTeamID   string
+	schemes 	   []string
 }
 
 type Semver struct {
@@ -51,6 +52,10 @@ func newBuildInfo(pkgPath string) (*buildInfo, error) {
 	if *name != "" {
 		appName = *name
 	}
+	schemes := strings.Split(*schemes, ",")
+	for i, scheme := range schemes {
+		schemes[i] = strings.TrimSpace(scheme)
+	}
 	ver, err := parseSemver(*version)
 	if err != nil {
 		return nil, err
@@ -72,6 +77,7 @@ func newBuildInfo(pkgPath string) (*buildInfo, error) {
 		notaryAppleID:  *notaryID,
 		notaryPassword: *notaryPass,
 		notaryTeamID:   *notaryTeamID,
+		schemes: 		schemes,
 	}
 	return bi, nil
 }

gogio/help.go

@@ -77,4 +77,9 @@ for details. If not provided, the password will be prompted.
 
 The -notaryteamid flag specifies the team ID to use for notarization of MacOS app, ignored if
 -notaryid is not provided.
+
+The -schemes flag specifies a list of comma separated URI schemes that the program can 
+handle. For example, use -schemes yourAppName to receive a transfer.URLEvent for URIs 
+starting with yourAppName://. It is only supported on Android, iOS, macOS and Windows. 
+On Windows, it will restrict the program to a single instance.
 `

gogio/iosbuild.go

@@ -4,6 +4,7 @@ package main
 
 import (
 	"archive/zip"
+	"bytes"
 	"crypto/sha1"
 	"encoding/hex"
 	"errors"
@@ -14,6 +15,7 @@ import (
 	"path/filepath"
 	"strconv"
 	"strings"
+	"text/template"
 	"time"
 
 	"golang.org/x/sync/errgroup"
@@ -203,7 +205,10 @@ func exeIOS(tmpDir, target, app string, bi *buildInfo) error {
 	if _, err := runCmd(lipo); err != nil {
 		return err
 	}
-	infoPlist := buildInfoPlist(bi)
+	infoPlist, err := buildInfoPlist(bi)
+	if err != nil {
+		return err
+	}
 	plistFile := filepath.Join(app, "Info.plist")
 	if err := os.WriteFile(plistFile, []byte(infoPlist), 0660); err != nil {
 		return err
@@ -291,7 +296,7 @@ func iosIcons(bi *buildInfo, tmpDir, appDir, icon string) (string, error) {
 	return assetPlist, err
 }
 
-func buildInfoPlist(bi *buildInfo) string {
+func buildInfoPlist(bi *buildInfo) (string, error) {
 	appName := UppercaseName(bi.name)
 	platform := iosPlatformFor(bi.target)
 	var supportPlatform string
@@ -301,44 +306,65 @@ func buildInfoPlist(bi *buildInfo) string {
 	case "tvos":
 		supportPlatform = "AppleTVOS"
 	}
-	return fmt.Sprintf(`<?xml version="1.0" encoding="UTF-8"?>
+
+	manifestSrc := struct {
+		AppName         string
+		AppID           string
+		Version         string
+		VersionCode     uint32
+		Platform        string
+		MinVersion      int
+		SupportPlatform string
+		Schemes         []string
+	}{
+		AppName:         appName,
+		AppID:           bi.appID,
+		Version:         bi.version.String(),
+		VersionCode:     bi.version.VersionCode,
+		Platform:        platform,
+		MinVersion:      minIOSVersion,
+		SupportPlatform: supportPlatform,
+		Schemes:         bi.schemes,
+	}
+
+	tmpl, err := template.New("manifest").Parse(`<?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>en</string>
 	<key>CFBundleExecutable</key>
-	<string>%s</string>
+	<string>{{.AppName}}</string>
 	<key>CFBundleIdentifier</key>
-	<string>%s</string>
+	<string>{{.AppID}}</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
-	<string>%s</string>
+	<string>{{.AppName}}</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>%s</string>
+	<string>{{.Version}}</string>
 	<key>CFBundleVersion</key>
-	<string>%d</string>
+	<string>{{.VersionCode}}</string>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIRequiredDeviceCapabilities</key>
 	<array><string>arm64</string></array>
 	<key>DTPlatformName</key>
-	<string>%s</string>
+	<string>{{.Platform}}</string>
 	<key>DTPlatformVersion</key>
 	<string>12.4</string>
 	<key>MinimumOSVersion</key>
-	<string>%d</string>
+	<string>{{.MinVersion}}</string>
 	<key>UIDeviceFamily</key>
 	<array>
 		<integer>1</integer>
 		<integer>2</integer>
 	</array>
 	<key>CFBundleSupportedPlatforms</key>
 	<array>
-		<string>%s</string>
+		<string>{{.SupportPlatform}}</string>
 	</array>
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
@@ -353,13 +379,36 @@ func buildInfoPlist(bi *buildInfo) string {
 	<key>DTSDKBuild</key>
 	<string>16G73</string>
 	<key>DTSDKName</key>
-	<string>%s12.4</string>
+	<string>{{.Platform}}12.4</string>
 	<key>DTXcode</key>
 	<string>1030</string>
 	<key>DTXcodeBuild</key>
 	<string>10G8</string>
+    {{if .Schemes}}
+	<key>CFBundleURLTypes</key>
+	<array>
+	  {{range .Schemes}}
+	  <dict>
+		<key>CFBundleURLSchemes</key>
+		<array>
+		  <string>{{.}}</string>
+		</array>
+	  </dict>
+	  {{end}}
+	</array>
+    {{end}}
 </dict>
-</plist>`, appName, bi.appID, appName, bi.version, bi.version.VersionCode, platform, minIOSVersion, supportPlatform, platform)
+</plist>`)
+	if err != nil {
+		panic(err)
+	}
+
+	var manifestBuffer bytes.Buffer
+	if err := tmpl.Execute(&manifestBuffer, manifestSrc); err != nil {
+		panic(err)
+	}
+
+	return manifestBuffer.String(), nil
 }
 
 func iosPlatformFor(target string) string {

gogio/macosbuild.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bytes"
 	"errors"
 	"fmt"
 	"os"
@@ -124,6 +125,19 @@ func (b *macBuilder) setIcon(path string) (err error) {
 }
 
 func (b *macBuilder) setInfo(buildInfo *buildInfo, name string) error {
+
+	manifestSrc := struct {
+		Name    string
+		Bundle  string
+		Version Semver
+		Schemes []string
+	}{
+		Name:    name,
+		Bundle:  buildInfo.appID,
+		Version: buildInfo.version,
+		Schemes: buildInfo.schemes,
+	}
+
 	t, err := template.New("manifest").Parse(`<?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
@@ -138,20 +152,28 @@ func (b *macBuilder) setInfo(buildInfo *buildInfo, name string) error {
 	<true/>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
+    {{if .Schemes}}
+	<key>CFBundleURLTypes</key>
+	<array>
+	  {{range .Schemes}}
+	  <dict>
+		<key>CFBundleURLSchemes</key>
+		<array>
+		  <string>{{.}}</string>
+		</array>
+	  </dict>
+	  {{end}}
+	</array>
+    {{end}}
 </dict>
 </plist>`)
 	if err != nil {
-		return err
+		panic(err)
 	}
 
-	var manifest bufferCoff
-	if err := t.Execute(&manifest, struct {
-		Name, Bundle string
-	}{
-		Name:   name,
-		Bundle: buildInfo.appID,
-	}); err != nil {
-		return err
+	var manifest bytes.Buffer
+	if err := t.Execute(&manifest, manifestSrc); err != nil {
+		panic(err)
 	}
 	b.Manifest = manifest.Bytes()
 

gogio/main.go

@@ -40,6 +40,7 @@ var (
 	notaryID      = flag.String("notaryid", "", "specify the apple id to use for notarization.")
 	notaryPass    = flag.String("notarypass", "", "specify app-specific password of the Apple ID to be used for notarization.")
 	notaryTeamID  = flag.String("notaryteamid", "", "specify the team id to use for notarization.")
+	schemes       = flag.String("schemes", "", "specify a list of comma separated deep-linking schemes that the program accepts")
 )
 
 func main() {

gogio/windowsbuild.go

@@ -202,10 +202,18 @@ func (b *windowsBuilder) buildProgram(buildInfo *buildInfo, name string, arch st
 		dest = filepath.Join(filepath.Dir(b.DestDir), name+"_"+arch+".exe")
 	}
 
+	ldflags := buildInfo.ldflags
+	if buildInfo.schemes != nil {
+		ldflags += ` -X "gioui.org/app.schemesURI=` + strings.Join(buildInfo.schemes, ",") + `" `
+	}
+	if buildInfo.appID != "" {
+		ldflags += ` -X "gioui.org/app.ID=` + buildInfo.appID + `" `
+	}
+
 	cmd := exec.Command(
 		"go",
 		"build",
-		"-ldflags=-H=windowsgui "+buildInfo.ldflags,
+		"-ldflags=-H=windowsgui "+ldflags,
 		"-tags="+buildInfo.tags,
 		"-o", dest,
 		buildInfo.pkgPath,