Ghost/ghost/admin/lib/koenig-editor/addon/components/koenig-card-button.hbs

<KoenigCard
    @icon={{"koenig/card-indicator-email"}}
    @class={{concat (kg-style "container-card") " kg-email-card kg-email-cta-card mih10 miw-100 relative"}}
    @headerOffset={{@headerOffset}}
    @toolbar={{this.toolbar}}
    @payload={{@payload}}
    @isSelected={{@isSelected}}
    @isEditing={{@isEditing}}
    @selectCard={{@selectCard}}
    @deselectCard={{@deselectCard}}
    @editCard={{@editCard}}
    @hasEditMode={{true}}
    @saveCard={{@saveCard}}
    @saveAsSnippet={{@saveAsSnippet}}
    @onLeaveEdit={{this.leaveEditMode}}
    @addParagraphAfterCard={{@addParagraphAfterCard}}
    @moveCursorToPrevSection={{@moveCursorToPrevSection}}
    @moveCursorToNextSection={{@moveCursorToNextSection}}
    @editor={{@editor}}
    {{did-insert this.registerElement}}
    as |card|
>
    {{#if @isEditing}}

        {{!-- edit mode view --}}

        <div class="{{if (eq @payload.alignment "center") "tc"}}">

            <button type="button" class="gh-btn gh-btn-accent" disabled={{not @payload.buttonText}}>
                {{#if @payload.buttonText}}
                    <span>{{@payload.buttonText}}</span>
                {{else}}
                    <span>Add button text</span>
                {{/if}}
            </button>

        </div>

        <KoenigSettingsPanel>
            <div class="kg-settings-panel-control kg-settings-panel-control-horizontal">
                <div class="kg-settings-panel-control-label">Content alignment</div>
                <div class="kg-settings-panel-control-input">
                    <div class="gh-btn-group icons">
                        <button type="button" title="Left-align content" class="gh-btn gh-btn-icon {{if (eq @payload.alignment "left") "gh-btn-group-selected"}}" {{on "click" (fn this.setAlignment "left")}}><span>{{svg-jar "align-left"}}</span></button>
                        <button type="button" title="Center-align content" class="gh-btn gh-btn-icon {{if (eq @payload.alignment "center") "gh-btn-group-selected"}}" {{on "click" (fn this.setAlignment "center")}}><span>{{svg-jar "align-center"}}</span></button>
                    </div>
                </div>
            </div>

            <hr class="kg-settings-panel-divider">

            <div class="kg-settings-panel-control">
                <label class="kg-settings-panel-control-label" for="button-text-input">Button title</label>
                <div class="kg-settings-panel-control-input">
                    <input
                        type="text"
                        class="gh-input"
                        id="button-text-input"
                        name="button-text"
                        value={{@payload.buttonText}}
                        placeholder="Add button text"
                        {{on "input" this.setButtonText}}
                        {{on-key "Enter" (fn this.focusElement "#button-url-input")}}
                    >
                </div>
            </div>

            <div class="kg-settings-panel-control">
                <label class="kg-settings-panel-control-label" for="button-url-input">Button URL</label>
                <div class="kg-settings-panel-control-input">
                    <GhInputWithSelect
                        @value={{@payload.buttonUrl}}
                        @options={{this.suggestedUrls}}
                        @valueField="url"
                        @searchField="url"
                        @placeholder="https://yoursite.com/#/portal/signup/"
                        @searchMessage={{null}}
                        @onInput={{this.setButtonUrl}}
                        @openOnFocus={{true}}
                        @closeWhenEmpty={{true}}
                        @triggerClass="email-cta-button-url-input"
                        @triggerId="button-url-input"
                        @renderInPlace={{false}} {{!-- avoid dropdown inheriting editor styles --}}
                        as |suggestion|
                    >
                        <span class="db b">{{suggestion.name}}</span>
                        {{suggestion.url}}
                    </GhInputWithSelect>
                </div>
            </div>
        </KoenigSettingsPanel>

    {{else}}

        {{!-- rendered (non-edit) mode view --}}

        <div class="{{if (eq @payload.alignment "center") "tc"}}">
            <a class="gh-btn gh-btn-accent" href="javascript:void(0)" data-tooltip={{@payload.buttonUrl}}><span>{{@payload.buttonText}}</span></a>
        </div>

    {{/if}}
</KoenigCard>