unexist.dev

h1. Hooks

{{>toc}}nnnnn

[[Hooks]] are small blocks of code ("Ruby":http://www.ruby-lang.org procs or lambdas) that can be called on certain events of the window manager. Many [[hooks]] get a [[subtlext]] object matching to the type [[hooks|hook]], like a [[Clients|client]] object for the _client_create_ [[hooks|hook]].

Generally all [[hooks]] can either be used in the config or in a [[sublets|sublet]], just the number of arguments varies: Inside of the config [[hooks]] have one argument, a [[hooks|hook]] inside of a [[sublets|sublets]] has an additional argument - the instance of the [[sublets|sublet]] itself and this will always be the first argument.

{{subforge_toggle_numbers}}
<pre>{{subforge_toggle_numbers}}<code class="ruby">
# A hook in the config
on :client_create do |c|
puts c.name #< Name of the client
end

# A hook in a sublet
on :client_create do |s, c|
puts s.name #< Name of the sublet
puts c.name #< Name of the client
end
</code></pre>

h2. Client Hooks

h3. client_create

Triggers on creation of new clients.

<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :client_create do |c|
puts c.name
end
</code></pre>

h3. client_mode

Triggers whenever a [[Clients#Modes|mode]] of a [[Clients|client]] is changed.

<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :client_mode do |c|
puts "client=#{c.instance}, urgent=#{c.is_urgent?}"
end
</code></pre>

h3. client_gravity

Triggers whenever a the [[gravity]] of a [[Clients|client]] is changed.

<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :client_focus do |c|
puts "client=#{c.instance}, urgent=#{c.is_urgent?}"
end
</code></pre>

h3. client_focus

Triggers whenever a [[Clients|client]] gets focus.

<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :client_focus do |c|
puts c.name
end
</code></pre>

{{subforge_needs(r3255)}}

h3. client_rename

Triggers whenever a [[Clients|client]] is renamed.

<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :client_rename do |c|
puts c.name
end
</code></pre>

h3. client_kill

Triggers when a [[Clients|client]] is killed.

<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :client_kill do |c|
puts c.name
end
</code></pre>

h2. Tag Hooks

h3. tag_create

Triggers when a [[Tagging|tag]] is created.
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :tag_create do |t|
puts t.name
end
</code></pre>

h3. tag_kill

Triggers when a [[Tagging|tag]] is killed.
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :tag_kill do |t|
puts t.name
end
</code></pre>

h2. View Hooks

h3. view_create

Triggers on creation of new [[views]].
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :view_create do |v|
puts v.name
end
</code></pre>

h3. view_focus

Triggers on a switch to a [[Views|view]].
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :view_focus do |v|
puts v.name
end
</code></pre>

h3. view_kill

Triggers when a [[Views|view]] is killed.
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :view_kill do |v|
puts v.name
end
</code></pre>

h2. Other

h3. start

Triggers on start
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :start do
puts "Yees"
end
</code></pre>

h3. exit

Triggers on exit
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :exit do
puts "Nooo"
end
</code></pre>

h3. tile

Triggers whenever tiling would be needed
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :tile do
puts "Insert tiling here"
end
</code></pre>

h3. reload

Triggers whenever subtle was reloaded
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :reload do
puts "Reloaded config"
end
</code></pre>

h2. Examples

Switch to the first view of new client
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :client_create do |c|
c.views.first.jump
end
</code></pre>

Tag a new [[Clients|client]] with the current [[Views|view]] only if it has no other [[Tagging|tags]]
<pre>{{subforge_toggle_numbers}}<code class="ruby">
on :client_create do |c|
cur = Subtlext::View.current

# Check for empty tags
if(c.tags.empty?)
t = Subtlext::Tag[cur.name] rescue nil

# Create new tag
if(t.nil?)
t = Subtlext::Tag.new(cur.name)
t.save
end

c + t
end
end
</code></pre>