Add conversion of Plots.jl's plotly plots

.github/workflows/jl_test.yml

@@ -0,0 +1,20 @@
+name: Julia tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        jl_version: ["1.6", "1.8", "1.9"]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.jl_version }}
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
+        with:
+          annotate: true

Project.toml

@@ -5,8 +5,32 @@ version = "0.2.0"
 
 [deps]
 JSON3 = "0f8b85d8-7281-11e9-16c2-39a750bddbf1"
-Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+PackageExtensionCompat = "65ce6f38-6b18-4e1d-a461-8949797d7930"
+
+[weakdeps]
+PlotlyBase = "a03496cd-edff-5a9b-9e67-9cda94a718b5"
+PlotlyJS = "f0f68f2c-4968-5e81-91da-67840de0976a"
+Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
+
+[extensions]
+DashBasePlotlyBaseExt = "PlotlyBase"
+DashBasePlotlyJSExt = "PlotlyJS"
+DashBasePlotsExt = "Plots"
 
 [compat]
 JSON3 = "1"
-julia = "1.2"
+Plots = "1"
+julia = "1.6"
+PlotlyBase = "0.8"
+PlotlyJS = "0.18"
+PackageExtensionCompat = "1"
+
+[extras]
+PlotlyBase = "a03496cd-edff-5a9b-9e67-9cda94a718b5"
+PlotlyJS = "f0f68f2c-4968-5e81-91da-67840de0976a"
+PlotlyKaleido = "f2990250-8cf9-495f-b13a-cce12b45703c"
+Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[targets]
+test = ["Test", "Plots", "PlotlyBase", "PlotlyJS", "PlotlyKaleido"]

ext/DashBasePlotlyBaseExt.jl

@@ -0,0 +1,13 @@
+module DashBasePlotlyBaseExt
+
+import DashBase
+import PlotlyBase
+import PlotlyBase.JSON
+
+function DashBase.to_dash(p::PlotlyBase.Plot)
+    data = JSON.lower(p)
+    pop!(data, :config, nothing)
+    return data
+end
+
+end

ext/DashBasePlotlyJSExt.jl

@@ -0,0 +1,10 @@
+module DashBasePlotlyJSExt
+
+import PlotlyJS
+import DashBase
+
+function DashBase.to_dash(p::PlotlyJS.SyncPlot)
+    DashBase.to_dash(p.plot)
+end
+
+end

ext/DashBasePlotsExt.jl

@@ -0,0 +1,18 @@
+module DashBasePlotsExt
+
+import Plots
+import DashBase
+
+
+function DashBase.to_dash(p::Plots.Plot{Plots.PlotlyBackend})
+    return if haskey(Base.loaded_modules, Base.PkgId(Base.UUID("a03496cd-edff-5a9b-9e67-9cda94a718b5"), "PlotlyBase")) &&
+        haskey(Base.loaded_modules, Base.PkgId(Base.UUID("f2990250-8cf9-495f-b13a-cce12b45703c"), "PlotlyKaleido"))
+        # Note: technically it would be sufficient if PlotlyBase is loaded, but thats how it is currently handled by Plots.jl
+        Plots.plotlybase_syncplot(p)
+    else
+        (data = Plots.plotly_series(p), layout = Plots.plotly_layout(p))
+    end
+end
+DashBase.to_dash(p::Plots.Plot{Plots.PlotlyJSBackend}) = Plots.plotlyjs_syncplot(p)
+
+end

src/DashBase.jl

@@ -1,5 +1,6 @@
 module DashBase
 import JSON3
+import PackageExtensionCompat
 include("components.jl")
 include("registry.jl")
 export Component, push_prop!, get_name, get_type, get_namespace,
@@ -8,4 +9,8 @@ get_dash_dependencies, get_dash_renderer_pkg, get_componens_pkgs,
 has_relative_path, has_dev_path, has_external_url, get_type,
 get_external_url, get_dev_path, get_relative_path
 
+function __init__()
+    PackageExtensionCompat.@require_extensions
+end
+
 end # module

test/runtests.jl

@@ -1,3 +1,4 @@
 using Test
 include("components.jl")
-include("registry.jl")
+include("test_ext.jl")
+include("registry.jl")

test/test_ext.jl

@@ -0,0 +1,25 @@
+using DashBase
+using Test
+using Plots
+plotlyjs()
+
+@testset "PlotlyJS" begin
+    pl = @test_nowarn DashBase.to_dash(plot(1:5))
+    @test pl isa PlotlyJS.SyncPlot
+    pl = @test_nowarn DashBase.to_dash(pl)
+    @test haskey(pl, :layout)
+    @test haskey(pl, :data)
+    @test haskey(pl, :frames)
+    @test !haskey(pl, :config)
+end
+
+plotly()
+@testset "PlotlyBase" begin
+    pl = @test_nowarn DashBase.to_dash(plot(1:5))
+    @test pl isa PlotlyBase.Plot
+    pl = @test_nowarn DashBase.to_dash(pl)
+    @test haskey(pl, :layout)
+    @test haskey(pl, :data)
+    @test haskey(pl, :frames)
+    @test !haskey(pl, :config)
+end