jsonを取得、表示するアプリケーション その１１

HTTP通信やツリーの構築に時間がかかるとウィンドウ全体が固まるのでSwingBuilder#doOutsideを使って別スレッドで処理を行う
ついでに処理中は送信ボタンを無効化する

json_client.groovy

import groovy.swing.SwingBuilder
import groovy.json.JsonOutput
import groovy.json.JsonSlurper
import groovy.beans.Bindable
import javax.swing.*
import javax.swing.tree.DefaultMutableTreeNode as TreeNode
import java.awt.*
import java.net.*

def manager = new CookieManager()
manager.cookiePolicy = CookiePolicy.ACCEPT_ALL
CookieHandler.default = manager

@Bindable
class Model {
    String method = 'GET'
    String url = ''
    String params = ''
    String header = ''
    String json = ''
    Boolean enabled = true
}
def model = new Model()

def tabPane
def jsonTree

class TreeUtil {
    def clearTree = { jsonTree ->
        jsonTree.model.root.removeAllChildren()
        jsonTree.model.reload(jsonTree.model.root)
    }

    def createTree = { jsonTree, json ->
        clearTree(jsonTree)
        createNode(jsonTree.model.root, json)
    }

    def reloadTree = { jsonTree ->
        jsonTree.model.reload(jsonTree.model.root)
    }

    def createNode = { node, json ->
        if (json instanceof HashMap) {
            json.each { key, value ->
                def childNode = new TreeNode(key)
                node.add(childNode)
                createNode(childNode, value)
            }
        } else if (json instanceof ArrayList) {
            json.eachWithIndex { child, index ->
                def childNode = new TreeNode(index + 1)
                node.add(childNode)
                createNode(childNode, child)
            }
        } else {
            node.add(new TreeNode(json))
        }
    }
}
def treeUtil = new TreeUtil()

def prettyPrint = { text ->
    def result = JsonOutput.prettyPrint(text)
    (result =~ /\\u[0-9a-zA-Z]{4}/).each { match ->
        def code = match[2..5]
        def encTxt = new String([Integer.parseInt(code, 16)] as int[], 0, 1)
        result = result.replaceAll(/\\u${code}/, encTxt)
    }
    result
}

def swing = new SwingBuilder()

def sendRequest = {
    model.header = ''
    model.json = ''
    model.enabled = false
    treeUtil.clearTree(jsonTree)

    swing.doOutside {
        def method = model.method
        def url = model.url
        def params = URLEncoder.encode(model.params, 'utf-8').replaceAll('%3D', '=').replaceAll('%26', '&')
        if (method == 'GET') {
            url = "${url}?${params}"
        }

        def conn = url.toURL().openConnection()
        conn.requestMethod = method
        if (method == 'POST') {
            conn.doOutput = true
            conn.outputStream << params
        }

        def header = new StringBuilder()
        conn.headerFields.each { key, fields ->
            fields.each { field ->
                header << "${key ? key + ':' : ''}${field}\n"
            }
        }
        model.header = header.toString()

        model.json = prettyPrint(conn.inputStream.getText('utf-8'))

        def json = new JsonSlurper().parseText(model.json)
        treeUtil.createTree(jsonTree, json)

        conn.disconnect()

        doLater {
            treeUtil.reloadTree(jsonTree)

            tabPane.selectedIndex = 2
            model.enabled = true
        }
    }
}

swing.edt {
    frame(title:'jsonを取得、表示するアプリケーション', defaultCloseOperation:JFrame.EXIT_ON_CLOSE,
            size: [800, 600], show:true) {
        lookAndFeel('nimbus')
        borderLayout()
        hbox(constraints: BorderLayout.NORTH) {
            comboBox(items:['GET', 'POST'], selectedItem:bind(source: model, sourceProperty: 'method', mutual: true))
            textField(text:bind(source: model, sourceProperty: 'url', mutual: true))
            button(text:'送信', actionPerformed:sendRequest, enabled:bind {model.enabled})
        }
        tabPane = tabbedPane(constraints: BorderLayout.CENTER) {
            scrollPane(name:'パラメータ') {
                textArea(text:bind(source: model, sourceProperty: 'params', mutual: true))
            }
            scrollPane(name:'ヘッダ') {
                textArea(editable:false, text:bind {model.header})
            }
            scrollPane(name:'レスポンス（テキスト）') {
                textArea(editable:false, text:bind {model.json})
            }
            scrollPane(name:'レスポンス（ツリー）') {
                jsonTree = tree(rootVisible: false)
                treeUtil.clearTree(jsonTree)
            }
        }
    }
}