Hello World example

21 files changed, 821 insertions, 0 deletions

diff --git a/examples/helloworld/.gitignore b/examples/helloworld/.gitignore
new file mode 100644
index 00000000..4d615936
--- /dev/null
+++ b/examples/helloworld/.gitignore
@@ -0,0 +1,4 @@
+.*/
+build/
+out/
+*.iml
\ No newline at end of file
diff --git a/examples/helloworld/build.gradle b/examples/helloworld/build.gradle
new file mode 100644
index 00000000..afc39547
--- /dev/null
+++ b/examples/helloworld/build.gradle
@@ -0,0 +1,92 @@
+buildscript {
+    ext.kotlin_version = '1.2.20'
+    ext.production = (findProperty('prod') ?: 'false') == 'true'
+    ext.npmdeps = new URL("file:///home/rjaros/git/kvision/npm.dependencies").getText()
+
+    repositories {
+        jcenter()
+        maven { url 'https://dl.bintray.com/kotlin/kotlin-eap' }
+        maven { url "https://plugins.gradle.org/m2/" }
+    }
+
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "org.jetbrains.kotlin:kotlin-frontend-plugin:0.0.26"
+        classpath "gradle.plugin.io.gitlab.arturbosch.detekt:detekt-gradle-plugin:1.0.0.RC5-5"
+    }
+}
+
+apply plugin: 'kotlin2js'
+apply plugin: 'org.jetbrains.kotlin.frontend'
+apply plugin: "io.gitlab.arturbosch.detekt"
+
+repositories {
+    jcenter()
+    maven { url = 'https://dl.bintray.com/gbaldeck/kotlin' }
+    maven { url = 'https://dl.bintray.com/rjaros/kotlin' }
+    maven {
+	url "file:///home/rjaros/kotlin/mvn/"
+    }
+}
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib-js:$kotlin_version"
+    compile "org.jetbrains.kotlin:kotlin-test-js:$kotlin_version" // for now only compile configuration is supported
+    compile "pl.treksoft:kvision:0.0.1"
+}
+
+kotlinFrontend {
+    npm {
+        npmdeps.eachLine { line ->
+            def (name, version) = line.tokenize(" ")
+            dependency(name, version)
+        }
+        devDependency("karma")
+    }
+
+    webpackBundle {
+        bundleName = "main"
+        contentPath = file('src/main/web')
+    }
+
+    define "PRODUCTION", production
+
+}
+
+detekt {
+    version = "1.0.0.RC6-2"
+    profile("main") {
+        input = "$projectDir/src/main/kotlin"
+        config = "$projectDir/detekt.yml"
+        filters = ".*test.*,.*/resources/.*,.*/tmp/.*"
+    }
+}
+
+compileKotlin2Js {
+    kotlinOptions.metaInfo = true
+    kotlinOptions.outputFile = "$project.buildDir.path/js/${project.name}.js"
+    kotlinOptions.sourceMap = !production
+    kotlinOptions.moduleKind = 'commonjs'
+}
+
+compileTestKotlin2Js {
+    kotlinOptions.metaInfo = true
+    kotlinOptions.outputFile = "$project.buildDir.path/js-tests/${project.name}-tests.js"
+    kotlinOptions.sourceMap = !production
+    kotlinOptions.moduleKind = 'commonjs'
+}
+
+task copyResources(type: Copy) {
+    from "src/main/resources"
+    into file(buildDir.path + "/js")
+}
+
+task copyResourcesForTests(type: Copy) {
+    from "src/main/resources"
+    into file(buildDir.path + "/js-tests/")
+}
+
+afterEvaluate {
+    tasks.getByName("webpack-bundle") { dependsOn(copyResources) }
+    tasks.getByName("webpack-run") { dependsOn(copyResources, copyResourcesForTests) }
+}
diff --git a/examples/helloworld/detekt.yml b/examples/helloworld/detekt.yml
new file mode 100644
index 00000000..a6fdea75
--- /dev/null
+++ b/examples/helloworld/detekt.yml
@@ -0,0 +1,292 @@
+autoCorrect: true
+failFast: false
+
+build:
+  warningThreshold: 5
+  failThreshold: 10
+  weights:
+    complexity: 2
+    formatting: 1
+    LongParameterList: 1
+    comments: 1
+
+processors:
+  active: true
+  exclude:
+  # - 'FunctionCountProcessor'
+  # - 'PropertyCountProcessor'
+  # - 'ClassCountProcessor'
+  # - 'PackageCountProcessor'
+  # - 'KtFileCountProcessor'
+
+console-reports:
+  active: true
+  exclude:
+  #  - 'ProjectStatisticsReport'
+  #  - 'ComplexityReport'
+  #  - 'NotificationReport'
+  #  - 'FindingsReport'
+  #  - 'BuildFailureReport'
+
+output-reports:
+  active: true
+  exclude:
+  #  - 'PlainOutputReport'
+  #  - 'XmlOutputReport'
+
+potential-bugs:
+  active: true
+  DuplicateCaseInWhenExpression:
+    active: true
+  EqualsAlwaysReturnsTrueOrFalse:
+    active: false
+  EqualsWithHashCodeExist:
+    active: true
+  WrongEqualsTypeParameter:
+    active: false
+  ExplicitGarbageCollectionCall:
+    active: true
+  UnreachableCode:
+    active: true
+  LateinitUsage:
+    active: false
+  UnsafeCallOnNullableType:
+    active: false
+  UnsafeCast:
+    active: false
+  UselessPostfixExpression:
+    active: false
+
+performance:
+  active: true
+  ForEachOnRange:
+    active: true
+  SpreadOperator:
+    active: true
+  UnnecessaryTemporaryInstantiation:
+    active: true
+
+exceptions:
+  active: true
+  TooGenericExceptionCatched:
+    active: true
+    exceptions:
+      - ArrayIndexOutOfBoundsException
+      - Error
+      - Exception
+      - IllegalMonitorStateException
+      - IndexOutOfBoundsException
+      - NullPointerException
+      - RuntimeException
+  TooGenericExceptionThrown:
+    active: true
+    exceptions:
+      - Throwable
+      - ThrowError
+      - ThrowException
+      - ThrowNullPointerException
+      - ThrowRuntimeException
+      - ThrowThrowable
+
+empty-blocks:
+  active: true
+  EmptyCatchBlock:
+    active: true
+  EmptyClassBlock:
+    active: true
+  EmptyDefaultConstructor:
+    active: true
+  EmptyDoWhileBlock:
+    active: true
+  EmptyElseBlock:
+    active: true
+  EmptyFinallyBlock:
+    active: true
+  EmptyForBlock:
+    active: true
+  EmptyFunctionBlock:
+    active: true
+  EmptyIfBlock:
+    active: true
+  EmptyInitBlock:
+    active: true
+  EmptySecondaryConstructor:
+    active: true
+  EmptyWhenBlock:
+    active: true
+  EmptyWhileBlock:
+    active: true
+
+complexity:
+  active: true
+  LongMethod:
+    threshold: 20
+  LongParameterList:
+    threshold: 5
+  LargeClass:
+    threshold: 150
+  ComplexMethod:
+    threshold: 10
+  TooManyFunctions:
+    threshold: 10
+  ComplexCondition:
+    threshold: 3
+  LabeledExpression:
+    active: false
+  StringLiteralDuplication:
+    active: false
+    threshold: 2
+    ignoreAnnotation: true
+    excludeStringsWithLessThan5Characters: true
+    ignoreStringsRegex: '$^'
+
+code-smell:
+  active: true
+  FeatureEnvy:
+    threshold: 0.5
+    weight: 0.45
+    base: 0.5
+
+formatting:
+  active: true
+  useTabs: true
+  Indentation:
+    active: false
+    indentSize: 4
+  ConsecutiveBlankLines:
+    active: true
+    autoCorrect: true
+  MultipleSpaces:
+    active: true
+    autoCorrect: true
+  SpacingAfterComma:
+    active: true
+    autoCorrect: true
+  SpacingAfterKeyword:
+    active: true
+    autoCorrect: true
+  SpacingAroundColon:
+    active: true
+    autoCorrect: true
+  SpacingAroundCurlyBraces:
+    active: true
+    autoCorrect: true
+  SpacingAroundOperator:
+    active: true
+    autoCorrect: true
+  TrailingSpaces:
+    active: true
+    autoCorrect: true
+  UnusedImports:
+    active: true
+    autoCorrect: true
+  OptionalSemicolon:
+    active: true
+    autoCorrect: true
+  OptionalUnit:
+    active: true
+    autoCorrect: true
+  ExpressionBodySyntax:
+    active: false
+    autoCorrect: false
+  ExpressionBodySyntaxLineBreaks:
+    active: false
+    autoCorrect: false
+  OptionalReturnKeyword:
+    active: true
+    autoCorrect: false
+
+style:
+  active: true
+  ReturnCount:
+    active: true
+    max: 2
+  NewLineAtEndOfFile:
+    active: true
+  OptionalAbstractKeyword:
+    active: true
+  OptionalWhenBraces:
+    active: false
+  EqualsNullCall:
+    active: false
+  ForbiddenComment:
+    active: true
+    values: 'TODO:,FIXME:,STOPSHIP:'
+  ForbiddenImport:
+    active: false
+    imports: ''
+  ModifierOrder:
+    active: true
+  MagicNumber:
+    active: true
+    ignoreNumbers: '-1,0,1,2'
+    ignoreHashCodeFunction: false
+    ignorePropertyDeclaration: false
+    ignoreAnnotation: false
+  WildcardImport:
+    active: true
+  SafeCast:
+    active: true
+  MaxLineLength:
+    active: true
+    maxLineLength: 120
+    excludePackageStatements: false
+    excludeImportStatements: false
+  PackageNaming:
+    active: true
+    packagePattern: '^[a-z]+(\.[a-z][a-z0-9]*)*$'
+  ClassNaming:
+    active: true
+    classPattern: '[A-Z$][a-zA-Z$]*'
+  EnumNaming:
+    active: true
+    enumEntryPattern: '^[A-Z$][a-zA-Z_$]*$'
+  FunctionNaming :
+    active: true
+    functionPattern: '^[a-z$][a-zA-Z$0-9]*$'
+  FunctionMaxLength:
+    active: false
+    maximumFunctionNameLength: 30
+  FunctionMinLength:
+    active: false
+    minimumFunctionNameLength: 3
+  VariableNaming :
+    active: true
+    variablePattern: '^(_)?[a-z$][a-zA-Z$0-9]*$'
+  ConstantNaming :
+    active: true
+    constantPattern: '^([A-Z_]*|serialVersionUID)$'
+  VariableMaxLength:
+    active: false
+    maximumVariableNameLength: 30
+  VariableMinLength:
+    active: false
+    minimumVariableNameLength: 3
+  ProtectedMemberInFinalClass:
+    active: false
+  UnnecessaryParentheses:
+    active: false
+
+comments:
+  active: true
+  CommentOverPrivateMethod:
+    active: true
+  CommentOverPrivateProperty:
+    active: true
+  UndocumentedPublicClass:
+    active: false
+    searchInNestedClass: true
+    searchInInnerClass: true
+    searchInInnerObject: true
+    searchInInnerInterface: true
+  UndocumentedPublicFunction:
+    active: false
+
+# *experimental feature*
+# Migration rules can be defined in the same config file or a new one
+migration:
+  active: true
+  imports:
+    # your.package.Class: new.package.or.Class
+    # for example:
+    # io.gitlab.arturbosch.detekt.api.Rule: io.gitlab.arturbosch.detekt.rule.Rule
diff --git a/examples/helloworld/gradle.properties b/examples/helloworld/gradle.properties
new file mode 100644
index 00000000..4ac81290
--- /dev/null
+++ b/examples/helloworld/gradle.properties
@@ -0,0 +1,2 @@
+#org.gradle.jvmargs=-XX:+UnlockCommercialFeatures -XX:+FlightRecorder
+#org.gradle.debug=true
diff --git a/examples/helloworld/gradle/wrapper/gradle-wrapper.jar b/examples/helloworld/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..8eef7fe1
--- /dev/null
+++ b/examples/helloworld/gradle/wrapper/gradle-wrapper.jar
diff --git a/examples/helloworld/gradle/wrapper/gradle-wrapper.properties b/examples/helloworld/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..fa2f9dad
--- /dev/null
+++ b/examples/helloworld/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Aug 16 00:13:26 CEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0.2-all.zip
diff --git a/examples/helloworld/gradlew b/examples/helloworld/gradlew
new file mode 100755
index 00000000..27309d92
--- /dev/null
+++ b/examples/helloworld/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/examples/helloworld/gradlew.bat b/examples/helloworld/gradlew.bat
new file mode 100644
index 00000000..832fdb60
--- /dev/null
+++ b/examples/helloworld/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/examples/helloworld/package.json.d/project.info b/examples/helloworld/package.json.d/project.info
new file mode 100644
index 00000000..805c8f43
--- /dev/null
+++ b/examples/helloworld/package.json.d/project.info
@@ -0,0 +1,3 @@
+{
+    "description": "KVision Helloworld"
+}
diff --git a/examples/helloworld/settings.gradle b/examples/helloworld/settings.gradle
new file mode 100644
index 00000000..6a02f57e
--- /dev/null
+++ b/examples/helloworld/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'helloworld'
diff --git a/examples/helloworld/src/main/kotlin/com/example/Helloworld.kt b/examples/helloworld/src/main/kotlin/com/example/Helloworld.kt
new file mode 100644
index 00000000..61e75482
--- /dev/null
+++ b/examples/helloworld/src/main/kotlin/com/example/Helloworld.kt
@@ -0,0 +1,32 @@
+package com.example
+
+import pl.treksoft.kvision.ApplicationBase
+import pl.treksoft.kvision.core.Root
+import pl.treksoft.kvision.html.TAG
+import pl.treksoft.kvision.html.Tag
+import pl.treksoft.kvision.panel.FLEXDIR
+import pl.treksoft.kvision.panel.FLEXJUSTIFY
+import pl.treksoft.kvision.panel.FlexPanel
+import pl.treksoft.kvision.utils.px
+
+class Helloworld : ApplicationBase() {
+
+    override fun start(state: Map<String, Any>) {
+        val root = Root("helloworld")
+        val panel = FlexPanel(FLEXDIR.ROW, justify = FLEXJUSTIFY.CENTER)
+        val hello = Tag(TAG.DIV, "Hello world!", classes = setOf("helloworld")).apply {
+            marginTop = 50.px()
+
+        }
+        panel.add(hello)
+        root.add(panel)
+    }
+
+    override fun dispose(): Map<String, Any> {
+        return mapOf()
+    }
+
+    companion object {
+        val css = require("./css/style.css")
+    }
+}
diff --git a/examples/helloworld/src/main/kotlin/com/example/Main.kt b/examples/helloworld/src/main/kotlin/com/example/Main.kt
new file mode 100644
index 00000000..fba5f87a
--- /dev/null
+++ b/examples/helloworld/src/main/kotlin/com/example/Main.kt
@@ -0,0 +1,41 @@
+package com.example
+
+import pl.treksoft.kvision.ApplicationBase
+import pl.treksoft.kvision.core.KVManager
+import pl.treksoft.kvision.module
+import kotlin.browser.document
+
+external fun require(name: String): dynamic
+
+fun main(args: Array<String>) {
+    var application: ApplicationBase? = null
+
+    val state: dynamic = module.hot?.let { hot ->
+        hot.accept()
+
+        hot.dispose { data ->
+            data.appState = application?.dispose()
+            KVManager.shutdown()
+            application = null
+        }
+
+        hot.data
+    }
+
+    if (document.body != null) {
+        application = start(state)
+    } else {
+        KVManager.init()
+        application = null
+        document.addEventListener("DOMContentLoaded", { application = start(state) })
+    }
+}
+
+fun start(state: dynamic): ApplicationBase? {
+    if (document.getElementById("helloworld") == null) return null
+    val application = Helloworld()
+    @Suppress("UnsafeCastFromDynamic")
+    application.start(state?.appState ?: emptyMap())
+    return application
+}
+
diff --git a/examples/helloworld/src/main/web/index.html b/examples/helloworld/src/main/web/index.html
new file mode 100644
index 00000000..8d540e95
--- /dev/null
+++ b/examples/helloworld/src/main/web/index.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>KVision Showcase</title>
+    <script type="text/javascript" src="main.bundle.js"></script>
+    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
+    <!--[if lt IE 9]>
+    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
+    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
+    <![endif]-->
+</head>
+<body>
+<div id="helloworld"></div>
+</body>
+</html>
diff --git a/examples/helloworld/src/test/kotlin/test/com/example/HelloworldSpec.kt b/examples/helloworld/src/test/kotlin/test/com/example/HelloworldSpec.kt
new file mode 100644
index 00000000..8054c000
--- /dev/null
+++ b/examples/helloworld/src/test/kotlin/test/com/example/HelloworldSpec.kt
@@ -0,0 +1,21 @@
+package test.com.example
+
+import com.example.Helloworld
+import kotlin.browser.document
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+class HelloworldSpec : DomSpec {
+
+    @Test
+    fun render() {
+        run {
+            Helloworld().start(mapOf())
+            val element = document.getElementById("helloworld")
+            assertTrue(
+                element?.innerHTML?.contains("Hello world!") ?: false,
+                "Application should render Hello world! text"
+            )
+        }
+    }
+}
diff --git a/examples/helloworld/src/test/kotlin/test/com/example/TestUtil.kt b/examples/helloworld/src/test/kotlin/test/com/example/TestUtil.kt
new file mode 100644
index 00000000..c5ec014f
--- /dev/null
+++ b/examples/helloworld/src/test/kotlin/test/com/example/TestUtil.kt
@@ -0,0 +1,32 @@
+package test.com.example
+
+import pl.treksoft.jquery.jQuery
+import kotlin.browser.document
+
+interface TestSpec {
+    fun beforeTest()
+
+    fun afterTest()
+
+    fun run(code: () -> Unit) {
+        beforeTest()
+        code()
+        afterTest()
+    }
+}
+
+interface DomSpec : TestSpec {
+
+    override fun beforeTest() {
+        val fixture = "<div style=\"display: none\" id=\"pretest\">" +
+                "<div id=\"helloworld\"></div></div>"
+        document.body?.insertAdjacentHTML("afterbegin", fixture)
+    }
+
+    override fun afterTest() {
+        val div = document.getElementById("pretest")
+        div?.remove()
+        jQuery(`object` = ".modal-backdrop").remove()
+    }
+
+}
diff --git a/examples/helloworld/webpack.config.d/bootstrap.js b/examples/helloworld/webpack.config.d/bootstrap.js
new file mode 100644
index 00000000..32a7c4d0
--- /dev/null
+++ b/examples/helloworld/webpack.config.d/bootstrap.js
@@ -0,0 +1,4 @@
+config.module.rules.push({test: /\.(woff|woff2)(\?v=\d+\.\d+\.\d+)?$/, loader: 'url-loader?limit=10000&mimetype=application/font-woff'});
+config.module.rules.push({test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/, loader: 'url-loader?limit=10000&mimetype=application/octet-stream'});
+config.module.rules.push({test: /\.eot(\?v=\d+\.\d+\.\d+)?$/, loader: 'file-loader'});
+config.module.rules.push({test: /\.svg(\?v=\d+\.\d+\.\d+)?$/, loader: 'url-loader?limit=10000&mimetype=image/svg+xml'});
diff --git a/examples/helloworld/webpack.config.d/css.js b/examples/helloworld/webpack.config.d/css.js
new file mode 100644
index 00000000..5d710d35
--- /dev/null
+++ b/examples/helloworld/webpack.config.d/css.js
@@ -0,0 +1,2 @@
+config.module.rules.push({ test: /\.css$/, loader: "style-loader!css-loader" });
+
diff --git a/examples/helloworld/webpack.config.d/dce.js b/examples/helloworld/webpack.config.d/dce.js
new file mode 100644
index 00000000..b536a6bf
--- /dev/null
+++ b/examples/helloworld/webpack.config.d/dce.js
@@ -0,0 +1,2 @@
+var path = require("path");
+config.resolve.modules.unshift(path.resolve("./js/min"));
diff --git a/examples/helloworld/webpack.config.d/file.js b/examples/helloworld/webpack.config.d/file.js
new file mode 100644
index 00000000..8b853e7e
--- /dev/null
+++ b/examples/helloworld/webpack.config.d/file.js
@@ -0,0 +1,6 @@
+config.module.rules.push(
+    {
+        test: /\.(jpe?g|png|gif|svg)$/i,
+        loader: 'file-loader'
+    }
+);
\ No newline at end of file
diff --git a/examples/helloworld/webpack.config.d/jquery.js b/examples/helloworld/webpack.config.d/jquery.js
new file mode 100644
index 00000000..40522595
--- /dev/null
+++ b/examples/helloworld/webpack.config.d/jquery.js
@@ -0,0 +1,4 @@
+config.plugins.push(new webpack.ProvidePlugin({
+    $: "jquery",
+    jQuery: "jquery"
+}));
diff --git a/examples/helloworld/webpack.config.d/minify.js b/examples/helloworld/webpack.config.d/minify.js
new file mode 100644
index 00000000..34e706c9
--- /dev/null
+++ b/examples/helloworld/webpack.config.d/minify.js
@@ -0,0 +1,4 @@
+if (defined.PRODUCTION) {
+    config.plugins.push(new webpack.optimize.UglifyJsPlugin({
+    }));
+}