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Skip inclusion of JavaScript when the output format is not raw #132

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Skip inclusion of JavaScript when the output format is not raw #132

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79 changes: 41 additions & 38 deletions sphinxcontrib/mermaid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -411,6 +411,10 @@ def install_js(
context: dict,
doctree: nodes.document | None,
) -> None:
# Skip when not emitting raw Mermaid diagrams which need rendering
if app.config.mermaid_output_format != "raw":
return

# Skip for pages without Mermaid diagrams
if doctree and not doctree.next_node(mermaid):
return
Expand All @@ -432,53 +436,52 @@ def install_js(
)
app.add_js_file(None, body=app.config.mermaid_init_js, priority=priority)

if app.config.mermaid_output_format == "raw":
if app.config.mermaid_d3_zoom:
if app.config.mermaid_d3_zoom:
_d3_js_url = "https://unpkg.com/d3/dist/d3.min.js"
_d3_js_script = """
window.addEventListener("load", function () {
var svgs = d3.selectAll(".mermaid svg");
svgs.each(function() {
var svg = d3.select(this);
svg.html("<g>" + svg.html() + "</g>");
var inner = svg.select("g");
var zoom = d3.zoom().on("zoom", function(event) {
inner.attr("transform", event.transform);
});
svg.call(zoom);
});
});
"""
app.add_js_file(_d3_js_url, priority=app.config.mermaid_js_priority)
app.add_js_file(None, body=_d3_js_script, priority=app.config.mermaid_js_priority)
elif doctree:
mermaid_nodes = doctree.findall(mermaid)
_d3_selector = ""
for mermaid_node in mermaid_nodes:
if "zoom_id" in mermaid_node:
_zoom_id = mermaid_node["zoom_id"]
if _d3_selector == "":
_d3_selector += f".mermaid#{_zoom_id} svg"
else:
_d3_selector += f", .mermaid#{_zoom_id} svg"
if _d3_selector != "":
_d3_js_url = "https://unpkg.com/d3/dist/d3.min.js"
_d3_js_script = """
window.addEventListener("load", function () {
var svgs = d3.selectAll(".mermaid svg");
svgs.each(function() {
_d3_js_script = f"""
window.addEventListener("load", function () {{
var svgs = d3.selectAll("{_d3_selector}");
svgs.each(function() {{
var svg = d3.select(this);
svg.html("<g>" + svg.html() + "</g>");
var inner = svg.select("g");
var zoom = d3.zoom().on("zoom", function(event) {
var zoom = d3.zoom().on("zoom", function(event) {{
inner.attr("transform", event.transform);
});
}});
svg.call(zoom);
});
});
}});
}});
"""
app.add_js_file(_d3_js_url, priority=app.config.mermaid_js_priority)
app.add_js_file(None, body=_d3_js_script, priority=app.config.mermaid_js_priority)
elif doctree:
mermaid_nodes = doctree.findall(mermaid)
_d3_selector = ""
for mermaid_node in mermaid_nodes:
if "zoom_id" in mermaid_node:
_zoom_id = mermaid_node["zoom_id"]
if _d3_selector == "":
_d3_selector += f".mermaid#{_zoom_id} svg"
else:
_d3_selector += f", .mermaid#{_zoom_id} svg"
if _d3_selector != "":
_d3_js_url = "https://unpkg.com/d3/dist/d3.min.js"
_d3_js_script = f"""
window.addEventListener("load", function () {{
var svgs = d3.selectAll("{_d3_selector}");
svgs.each(function() {{
var svg = d3.select(this);
svg.html("<g>" + svg.html() + "</g>");
var inner = svg.select("g");
var zoom = d3.zoom().on("zoom", function(event) {{
inner.attr("transform", event.transform);
}});
svg.call(zoom);
}});
}});
"""
app.add_js_file(_d3_js_url, priority=app.config.mermaid_js_priority)
app.add_js_file(None, body=_d3_js_script, priority=app.config.mermaid_js_priority)


def setup(app):
Expand Down