unexist.dev

h1. Hooks

{{>toc}}

[[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. 

<pre><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><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><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><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><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><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><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><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><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><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><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><code class="ruby">

on :view_kill do |v|

  puts v.name

end

</code></pre>

h2. Other

h3. start

Triggers on start

<pre><code class="ruby">

on :start do

  puts "Yees"

end

</code></pre>

h3. exit

Triggers on exit

<pre><code class="ruby">

on :exit do

  puts "Nooo"

end

</code></pre>

h3. tile

Triggers whenever tiling would be needed

<pre><code class="ruby">

on :tile do 

  puts "Insert tiling here"

end

</code></pre>

h3. reload

Triggers whenever subtle was reloaded

<pre><code class="ruby">

on :reload do 

  puts "Reloaded config"

end

</code></pre>

h2. Examples

Switch to the first view of new client

<pre><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><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>