1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
package main
import (
"github.com/ethereum/eth-go/ethchain"
"github.com/ethereum/eth-go/ethpub"
"github.com/ethereum/eth-go/ethreact"
"github.com/ethereum/eth-go/ethutil"
"github.com/go-qml/qml"
)
type AppContainer interface {
Create() error
Destroy()
Window() *qml.Window
Engine() *qml.Engine
NewBlock(*ethchain.Block)
ObjectChanged(*ethchain.StateObject)
StorageChanged(*ethchain.StorageState)
NewWatcher(chan bool)
}
type ExtApplication struct {
*ethpub.PEthereum
blockChan chan ethreact.Event
changeChan chan ethreact.Event
quitChan chan bool
watcherQuitChan chan bool
container AppContainer
lib *UiLib
registeredEvents []string
}
func NewExtApplication(container AppContainer, lib *UiLib) *ExtApplication {
app := &ExtApplication{
ethpub.NewPEthereum(lib.eth),
make(chan ethreact.Event, 100),
make(chan ethreact.Event, 100),
make(chan bool),
make(chan bool),
container,
lib,
nil,
}
return app
}
func (app *ExtApplication) run() {
// Set the "eth" api on to the containers context
context := app.container.Engine().Context()
context.SetVar("eth", app)
context.SetVar("ui", app.lib)
err := app.container.Create()
if err != nil {
logger.Errorln(err)
return
}
// Call the main loop
go app.mainLoop()
// Subscribe to events
reactor := app.lib.eth.Reactor()
reactor.Subscribe("newBlock", app.blockChan)
app.container.NewWatcher(app.watcherQuitChan)
win := app.container.Window()
win.Show()
win.Wait()
app.stop()
}
func (app *ExtApplication) stop() {
// Clean up
reactor := app.lib.eth.Reactor()
reactor.Unsubscribe("newBlock", app.blockChan)
for _, event := range app.registeredEvents {
reactor.Unsubscribe(event, app.changeChan)
}
// Kill the main loop
app.quitChan <- true
app.watcherQuitChan <- true
close(app.blockChan)
close(app.quitChan)
close(app.changeChan)
app.container.Destroy()
}
func (app *ExtApplication) mainLoop() {
out:
for {
select {
case <-app.quitChan:
break out
case block := <-app.blockChan:
if block, ok := block.Resource.(*ethchain.Block); ok {
app.container.NewBlock(block)
}
case object := <-app.changeChan:
if stateObject, ok := object.Resource.(*ethchain.StateObject); ok {
app.container.ObjectChanged(stateObject)
} else if storageObject, ok := object.Resource.(*ethchain.StorageState); ok {
app.container.StorageChanged(storageObject)
}
}
}
}
func (app *ExtApplication) Watch(addr, storageAddr string) {
var event string
if len(storageAddr) == 0 {
event = "object:" + string(ethutil.Hex2Bytes(addr))
app.lib.eth.Reactor().Subscribe(event, app.changeChan)
} else {
event = "storage:" + string(ethutil.Hex2Bytes(addr)) + ":" + string(ethutil.Hex2Bytes(storageAddr))
app.lib.eth.Reactor().Subscribe(event, app.changeChan)
}
app.registeredEvents = append(app.registeredEvents, event)
}
|
