helloworld.go

// Copyright 2021  The CDK Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"github.com/go-curses/cdk"
	"github.com/go-curses/cdk/lib/enums"
	cstrings "github.com/go-curses/cdk/lib/strings"
	"github.com/go-curses/cdk/lib/sync"
	"github.com/go-curses/cdk/log"
)

// Build Configuration Flags
// setting these will enable command line flags and their corresponding features
// use `go build -v -ldflags="-X 'main.IncludeLogFullPaths=false'"`
var (
	IncludeProfiling          = "false"
	IncludeLogFile            = "false"
	IncludeLogFormat          = "false"
	IncludeLogFullPaths       = "false"
	IncludeLogLevel           = "false"
	IncludeLogLevels          = "false"
	IncludeLogTimestamps      = "false"
	IncludeLogTimestampFormat = "false"
	IncludeLogOutput          = "false"
)

func init() {
	cdk.Build.Profiling = cstrings.IsTrue(IncludeProfiling)
	cdk.Build.LogFile = cstrings.IsTrue(IncludeLogFile)
	cdk.Build.LogFormat = cstrings.IsTrue(IncludeLogFormat)
	cdk.Build.LogFullPaths = cstrings.IsTrue(IncludeLogFullPaths)
	cdk.Build.LogLevel = cstrings.IsTrue(IncludeLogLevel)
	cdk.Build.LogLevels = cstrings.IsTrue(IncludeLogLevels)
	cdk.Build.LogTimestamps = cstrings.IsTrue(IncludeLogTimestamps)
	cdk.Build.LogTimestampFormat = cstrings.IsTrue(IncludeLogTimestampFormat)
	cdk.Build.LogOutput = cstrings.IsTrue(IncludeLogOutput)
}

func main() {
	app := cdk.NewApplication(
		"helloworld",
		"An example CDK application",
		"Hello World is an example CDK application",
		"0.0.1",
		"helloworld",
		"Hello World",
		"/dev/tty",
	)
	app.Connect(
		cdk.SignalStartup,
		"helloworld-init-ui-handler",
		cdk.WithArgvApplicationSignalStartup(
			func(app cdk.Application, display cdk.Display, ctx context.Context, cancel context.CancelFunc, wg *sync.WaitGroup) enums.EventFlag {
				log.DebugF("initFn hit")
				display.CaptureCtrlC()
				w := &HelloWindow{}
				w.Init()
				display.FocusWindow(w)
				// draw the screen every second so the time displayed is now
				cdk.AddTimeout(time.Second, func() enums.EventFlag {
					display.RequestDraw()   // redraw the window, is buffered
					display.RequestShow()   // flag buffer for immediate show
					return enums.EVENT_PASS // keep looping every second
				})
				app.NotifyStartupComplete()
				return enums.EVENT_PASS // allow the startup to actually complete
			},
		),
	)
	app.Connect(cdk.SignalShutdown, "helloworld-shutdown-handler", func(data []interface{}, argv ...interface{}) enums.EventFlag {
		fmt.Printf("Quitting helloworld normally.\n")
		return enums.EVENT_PASS
	})
	if err := app.Run(os.Args); err != nil {
		fmt.Println(err)
	}
}