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// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301 USA
package main
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/url"
"os"
"path"
"path/filepath"
"github.com/ethereum/go-ethereum/ethchain"
"github.com/ethereum/go-ethereum/ethpipe"
"github.com/ethereum/go-ethereum/ethstate"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/javascript"
"github.com/howeyc/fsnotify"
"gopkg.in/qml.v1"
)
type HtmlApplication struct {
win *qml.Window
webView qml.Object
engine *qml.Engine
lib *UiLib
path string
watcher *fsnotify.Watcher
}
func NewHtmlApplication(path string, lib *UiLib) *HtmlApplication {
engine := qml.NewEngine()
return &HtmlApplication{engine: engine, lib: lib, path: path}
}
func (app *HtmlApplication) Create() error {
component, err := app.engine.LoadFile(app.lib.AssetPath("qml/webapp.qml"))
if err != nil {
return err
}
if filepath.Ext(app.path) == "eth" {
return errors.New("Ethereum package not yet supported")
// TODO
//ethutil.OpenPackage(app.path)
}
win := component.CreateWindow(nil)
win.Set("url", app.path)
webView := win.ObjectByName("webView")
app.win = win
app.webView = webView
return nil
}
func (app *HtmlApplication) RootFolder() string {
folder, err := url.Parse(app.path)
if err != nil {
return ""
}
return path.Dir(ethutil.WindonizePath(folder.RequestURI()))
}
func (app *HtmlApplication) RecursiveFolders() []os.FileInfo {
files, _ := ioutil.ReadDir(app.RootFolder())
var folders []os.FileInfo
for _, file := range files {
if file.IsDir() {
folders = append(folders, file)
}
}
return folders
}
func (app *HtmlApplication) NewWatcher(quitChan chan bool) {
var err error
app.watcher, err = fsnotify.NewWatcher()
if err != nil {
logger.Infoln("Could not create new auto-reload watcher:", err)
return
}
err = app.watcher.Watch(app.RootFolder())
if err != nil {
logger.Infoln("Could not start auto-reload watcher:", err)
return
}
for _, folder := range app.RecursiveFolders() {
fullPath := app.RootFolder() + "/" + folder.Name()
app.watcher.Watch(fullPath)
}
go func() {
out:
for {
select {
case <-quitChan:
app.watcher.Close()
break out
case <-app.watcher.Event:
//logger.Debugln("Got event:", ev)
app.webView.Call("reload")
case err := <-app.watcher.Error:
// TODO: Do something here
logger.Infoln("Watcher error:", err)
}
}
}()
}
func (app *HtmlApplication) Engine() *qml.Engine {
return app.engine
}
func (app *HtmlApplication) Window() *qml.Window {
return app.win
}
func (app *HtmlApplication) NewBlock(block *ethchain.Block) {
b := ðpipe.JSBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Bytes2Hex(block.Hash())}
app.webView.Call("onNewBlockCb", b)
}
func (self *HtmlApplication) Messages(messages ethstate.Messages, id string) {
var msgs []javascript.JSMessage
for _, m := range messages {
msgs = append(msgs, javascript.NewJSMessage(m))
}
b, _ := json.Marshal(msgs)
self.webView.Call("onWatchedCb", string(b), id)
}
func (app *HtmlApplication) Destroy() {
app.engine.Destroy()
}
func (app *HtmlApplication) Post(data string, seed int) {
fmt.Println("about to call 'post'")
app.webView.Call("post", seed, data)
}
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